Dissimilar Metals Fastener Guide	

Find the Correct Fastener for Your Dissimilar Metal Project!

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

Designing a building’s exterior with dissimilar metals can render you a stunning result; but there are some precautions that need to be taken to prevent two-metal (galvanic) corrosion.

We’ve created this guide to help you find the fasteners you need for your dissimilar metals project.

Page
3	Dissimilar Metal Fastener Guide
4 - 5	Panel to Panel Fastener (1/4-14 ZAC® Impax Lap (5/16”) )
6 - 7	Metal to Metal Fastener (#12–14 ZAC® Impax SD3 (5/16”))
8 - 9	Metal to Metal Fastener (#12-24 ZAC® Impax SD4.5 & SD5)
10 - 11	Metal to Wood or Metal Fastener (1/4-14 ZAC® Type AB Self-Tapping
12 - 13 ........... #14 Stainless DEKFAST DF-S4-#14
14	1/4-14 410 Stainless Lap Panel to Panel Fastener
15	#12-14 410 Stainless SD3 Metal to Metal Fastener
16	Metal to Wood Screws (Zinc & SS Cap Heads /Stainless Steel)
17	Aluminum Rivets
18	Dissimilar Metals Technical Bulletin

t t (galv

And if you need help with your project, AEP Span is here to help you with any product or design
questions you may have.

If you have any questions or need assistance, contact your AEP Span Sales or Architectural Representative.
Jeffrey Medeiros Architectural Design Support
916-207-0385 | jeffrey.medeiros@aepspan.com

DISSIMILAR METAL FASTENER GUIDE

FINISHES:
ZINCALUME® Plus
DURA TECH™ 5000 & mx
Vintage®
DURA TECH™ nt (26G only)

ACCESSORIES:
G90 Galv. Clips (standard)

PANEL SUBSTRATE: ZINCALUME FINISHES

(ALL STANDARD ACCESSORIES!)
AEP Span’s standard rivet is acceptable:
1/8” Pop Rivet 300 series Stainless Steel
Standard clip and screw accessories are acceptable.
No dissimilar metal issues.

Zinc-Coated Clip Screw s (standard)
Zinc-Coated Exposed Screws (standard)
Stainless Steel Rivets (standard)

*Please note that any unusual applications near chemicals
/ industrial, or swimming pools may need to be reviewed by Technical Services. If you are not sure please ask!

FINISHES:

PANEL SUBSTRATE: ZINCALUME FINISHES
Standard G90 Galv. Clips and Zinc-Coated Clip

DURANAR XL PLUS / 3-Coat Coastal
DURANAR PLUS / 2-Coat with High Build Primer (Required for <1000’ to salt water)

y

ACCESSORIES:
G90 Galv Clips (standard)
Zinc-Coated Clip Screws (standard)

Zinc-Alloy Capped heavy duty SD’s
Zinc-Alloy Capped WS’s
Aluminum Rivets (special order)

*Recommend sending SFS spec sheets for these fasteners to customers for confirmation

Screws are less likely to have galvanic corrosion because they are concealed from the salt air.

Any fasteners that are EXPOSED to the salt air will need to be in “ZAC” fasteners (Zinc Aluminum Cap). Example, exposed fastener

here	• ZAC (Zinc Aluminum Capped) Exposed

of selection

panel attachment.

o

Zinc-Alloy Capped LAPS
Zinc-Alloy Capped SD’s
anic)

PANEL SUBSTRATE: ALUMINUM FINISHES

FINISHES:
DURA TECH™ 5000 & mx
DURANAR PLUS / 2-Coat with High Build Primer

ACCESSORIES:
G90 Galv. Clips (standard)
Zinc-Coated Clip Screw s (standard)
Zinc-Coated Exposed Screws (standard)
Stainless Steel Rivets (standard)

ACCESSORIES:
Stainless Steel Clips (alternate option—in stock)
Stainless Steel Clip Screws (alternate option—in stock) DEKFAST Stainless Steel
Stainless Steel Exposed Screws (special order)
Stainless Steel LAPS
Stainless Steel SD’s
Stainless Steel WS’s
Aluminum Rivets (special order)

*Recommend sending SFS spec sheets for these fasteners to customers for confirmation of selection.

We already stock many accessories in Stain- less Steel, but some may still need to be special ordered such as the exposed fasteners.

There will be dissimilar metal issues if you pair Aluminum panels with galvanized (standard) accessories of any kind. Use Stain-less Steel (concealed or exposed) accessories.

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

1/4-14 ZAC® Impax Lap (5/16") Panel to Panel Fastener	

Features and Benefits
Zinc alloy cap head that will never red rust
Self-drill point for fast installation
Assembled EPDM sealing washer for a consistent weather tight seal
Long life fastener limited warranty

Application
Panel to panel side lap, end lap, and other stitch applications

Product Selection

Material No.	Fastener Length	
Thread Length*	
Description	Carton Wt. (lbs.)	
Carton Qty.	
	(in)	(mm)					
797195	7/8"	22	Full	ZSDL-#14x7/8-CHW5/16-N	36	2,000	

Plain product bagged 250 pieces, unless otherwise noted.
*Note – Thread length measured from tip of the drill point to top of the threads.

US
T 800 234 4533
us.sfs.com

Canada
T 866 847 5400
ca.sfs.com

Metric values are approximate conversions.

© SFS, 07/2021, US, V1.01

All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (07/2021, V1.01)

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

1/4-14 ZAC® Impax Lap (5/16") Panel to Panel Fastener	

ZSDL-14xL-CHW5/16-N-RevK

Product Specifications
Diameter:	1/4" (6.17 mm) Threads Per Inch:	14
Head Style:	5/16" dia. HWH AF (7.9 mm) Washer:	EPDM sealing washer

Drill Point:	SD1
Drill Capacity:	0.030–0.095" (0.762 mm–2.413 mm)
Thread Major Dia:	0.243" (6.17 mm)
Thread Minor Dia:  0.188" (4.78 mm)

Performance Data1, 2, 3
Material Strength
Tensile	3600 lbf / 16020 N	
Shear	2700 lbf / 12015 N	
Torsional	150 lbf∙in / 17.0 N∙m	

1 SFS [4812.12]
2 STQA50573
3 PLK 10403

Pull Out Strength Steel	Pull Out Strength Steel
ICC protocol 45 ksi	SFS testing 56 ksi	
22 Ga (0.8 mm)	318 lbf / 1414 N	26 Ga (0.5 mm)	204 lbf / 907 N	
20 Ga (0.9 mm)	412 lbf / 1832 N	24 Ga (0.6 mm)	304 lbf / 1352 N	
18 Ga (1.2 mm)	560 lbf / 2491 N	22 Ga (0.8 mm)	379 lbf / 1686 N	

Installation and Application Considerations
Tools: 0–2000 rpm screw gun equipped with depth sensing nose piece.

Use of impact guns or hammer drills is not recommended.

Composite thickness should not exceed 0.095" (2.4 mm).

US
T 800 234 4533
us.sfs.com

Canada
T 866 847 5400
ca.sfs.com

Metric values are approximate conversions.

© SFS, 07/2021, US, V1.01

All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (07/2021, V1.01)

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

#12–14 ZAC® Impax SD3 (5/16")
Metal to Metal Fastener	

Features and Benefits
Zinc alloy cap head that will never red rust
Precision cold forged assuring superior strength and the fastest drilling time performance
Designed to have low driving and thread engagement torque and provide maximum clamp load
Special long pilot length to accommodate nested purlins
Assembled EPDM sealing washer for a consistent weather tight seal
Long life fastener limited warranty

Application
Metal panel to light and medium gauge metal application

Product Selection

Material No.	Fastener Length	
Thread Length*	Load Bearing Length	
Description	
Carton Wt. (lbs.)	
Carton Qty.	
	(in)	(mm)		(in)	(mm)				
794238	1"	25	Full	0.35"	9	ZSD3-#12x1-CHW5/16-N	36	2,000	
1304673	1-1/4"	32	Full	0.60"	15	ZSD3-#12x1-1/4-CHW5/16-N	39	2,000	
1015151	1-1/2"	38	Full	0.85"	22	ZSD3-#12x1-1/2-CHW5/16-N	32	1,500	
796645	2"	51	Full	1.35"	34	ZSD3-#12x2-CHW5/16-N	25	1,000	

Plain product bagged 250 pieces, unless otherwise noted.
*Note – Thread length measured from end of pilot length to end of the threads.

US
T 800 234 4533
us.sfs.com

Canada
T 866 847 5400
ca.sfs.com

Metric values are approximate conversions.

© SFS, 07/2021, US, V1.01

All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (07/2021, V1.01)

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

#12–14 ZAC® Impax SD3 (5/16")
Metal to Metal Fastener	

ZSD3-#12xL-CHW5/16-N-RevIR

Product Specifications
Diameter:	#12 (5.38 mm) Threads Per Inch:	14
Head Style:	5/16" dia. Zinc alloy capped HWH AF
(7.9 mm)

Washer:	EPDM sealing washer
Drill Point:	SD3
Drill Capacity:	0.035"–0.210" (0.889 mm–5.334 mm)
Thread Major Dia:	0.212" (5.38 mm)
Thread Minor Dia:  0.160" (4.06 mm)

Performance Data1, 2, 3
Material Strength
Tensile	2500 lbf / 11125 N	
Shear	1800 lbf / 8010 N	
Torsional	92 lbf∙in / 10.4 N∙m	

Pull Over Strength Steel
26 Ga (0.5 mm):	654 lbf / 2909 N	
24 Ga (0.6 mm):	1056 lbf / 4697 N	
22 Ga (0.8 mm):	1249 lbf / 5556 N	
1 SFS [5083.14, 4812.11]
2 STQA50573
3 PLK 18716

Pull Out Strength Steel
	ICC protocol 45 ksi	SFS testing 56 ksi	
16 Ga (1.5 mm)	482 lbf / 2144 N	665 lbf / 2958 N	
14 Ga (1.9 mm)	741 lbf / 3296 N	901 lbf / 4008 N	
12 Ga (2.7 mm)	1234 lbf / 5489 N	1524 lbf / 6779 N	

Installation and Application Considerations
Tools: 0–2000 rpm screw gun equipped with depth sensing nose piece.

Use of impact guns or hammer drills is not recommended.

Fastener length should provide for a minimum of 3/16" penetration of fully developed threads into metal substrate.

US
T 800 234 4533
us.sfs.com

Canada
T 866 847 5400
ca.sfs.com

Metric values are approximate conversions.

© SFS, 07/2021, US, V1.01

All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (07/2021, V1.01)

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

#12-24 ZAC® Impax SD4.5 & SD5
Metal to Metal Fastener	

Features and Benefits
Zinc alloy cap head that will never red rust
Precision cold forged assuring superior strength and the fastest drilling time performance
Designed to have low driving and thread engagement torque and provide maximum clamp load
Special long pilot lengths to accommodate nested purlins
Assembled EPDM sealing washer for a consistent weather tight seal
Long life fastener limited warranty

Application
Metal panel and insulated metal panel to medium and heavy gauge metal application

Product Selection
Self-Drill 4.5

Material No.	Fastener Length	
Thread Length*	Load Bearing Length	
Description	
Carton Wt. (lbs.)	
Carton Qty.	
	(in)	(mm)		(in)	(mm)				
795668	1-1/4"	32	0.52"	0.40"	10	ZSD45-#12x1-1/4-CHW3/8-N	49	2,000	
Self-Drill 5

Material No.	Fastener Length	
Thread Length*	Load Bearing Length	
Description	
Carton Wt. (lbs.)	
Carton Qty.	
	(in)	(mm)		(in)	(mm)				
795842	1-1/4"	32	0.52"	0.40"	10	ZSD5-#12x1-1/4-CHW3/8-N	40	1,500	
796622	1-1/2"	38	0.77"	0.65"	16	ZSD5-#12x1-1/2-CHW3/8-N	42	1,500	

© SFS, 07/202011, US, V1.

Plain product bagged 250 pieces, unless otherwise noted.
*Note – Thread length measured from end of pilot length to end of the threads.

US
T 800 234 4533
us.sfs.com

Canada
T 866 847 5400
ca.sfs.com

Metric values are approximate conversions.
All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (07/2021, V1.01)

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

#12-24 ZAC® Impax SD4.5 & SD5
Metal to Metal Fastener	

ZSD45-12xL-CHW3/8-N-RevK

Product Specifications Diameter:	#12 (5.4 mm) Threads Per Inch:	24
Head Style:	3/8" dia. Zinc aluminum capped HWH
AF (9.4 mm)
Washer:	EPDM sealing washer

Drill Point:	SD4.5 or SD5
Drill Capacity SD4.5: 0.075"–0.375" (1.91–9.5 mm)
SD5:  0.075–0.500" (1.91–12.7 mm)
Thread Major Dia:	0.212" (5.4 mm)
Thread Minor Dia:	0.184" (4.7 mm)

Performance Data1, 2, 3

Pull Out Strength Steel	Pull Over Strength Steel	
	ICC protocol	SFS testing 56 ksi		
12 Ga (2.7 mm)	1260 lbfA / 5604 N	1378 lbf / 6130 N	26 Ga (0.5 mm)	794 lbf / 3532 N	
3/16" (4.7 mm)	2989 lbfB / 13295 N	Exceeds tensile	24 Ga (0.6 mm)	1310 lbf / 5827 N	
1/4" (6.4 mm)	Exceeds tensileB	Exceeds tensile	22 Ga (0.8 mm)	1647 lbf / 7326 N	

Material Strength
Tensile	3450 lbf / 15346 N	
Shear	2420 lbf / 10765 N	
Torsional	100 lbf∙in / 11.30 N∙m	

1 SFS [5509.18]
2 STQA50573
3 PLK 10303

Note A: 45 ksi. Note B: 58 ksi.

Installation and Application Considerations
Tools: 0–2000 rpm screw gun equipped with depth sensing nose piece.

Use of impact guns or hammer drills is not recommended.

Fastener length should provide for a minimum of 3/16" penetration of fully developed threads into metal substrate.

US
T 800 234 4533
us.sfs.com

Canada
T 866 847 5400
ca.sfs.com

Metric values are approximate conversions.

© SFS, 07/2021, US, V1.01

All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (07/2021, V1.01)

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

1/4-14 ZAC® Type AB Self-Tapping Metal to Wood or Metal Fastener 

Features and Benefits
Zinc alloy cap head that will never red rust
Assembled EPDM sealing washer for a consistent weather tight seal
Long life fastener limited warranty

Application
Metal panel to medium metal applications or metal panel to wood applications

Product Selection

Material No.	Fastener Length	Thread Length*	Metal to Metal
Load Bearing Length	
Description	Carton Wt. (lbs.)	
Carton Qty.	
	(in)	(mm)		(in)	(mm)				
784403	1"	25	Full	0.57"	15	ZTABMP-#14x1-CHW3/8-N	44	2,000	
784552	1-1/2"	38	Full	1.07"	27	ZTABMP-#14x1-1/2-CHW3/8-N	42	1,500	
784691	2"	51	Full	1.57"	40	ZTABMP-#14x2-CHW3/8-N	33	1,000	
784654	2-1/2"	64	Full	2.07"	53	ZTABMP-#14x2-1/2-CHW3/8-N	38	1,000	

Plain product bagged 250 pieces, unless otherwise noted.

© SFS, 07/2021, US, V1.01

*Note – Thread length measured from tip of point to top of the threads.

US
T 800 234 4533
us.sfs.com

Canada
T 866 847 5400
ca.sfs.com

Metric values are approximate conversions.
All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (07/2021, V1.01)

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

1/4-14 ZAC® Type AB Self-Tapping Metal to Wood or Metal Fastener 

ZTABMP-14xL-CHW3/8-N-RevJ

Product Specifications
Diameter:	1/4" (6.17 mm) Threads Per Inch:	14
Head Style:	3/8" dia. HH AF (9.4 mm) Washer:	 EPDM sealing washer

Drill Point:	Type AB Milled Point
Drill Capacity:	0.044"–0.110" (1.12 mm - 2.79 mm)
Thread Major Dia:	0.243" (6.17 mm)
Thread Minor Dia:  0.188" (4.78 mm)

Performance Data1, 2, 3
Material Strength
Tensile	3800 lbf / 16903 N	
Shear	2560 lbf / 11387 N	
Torsional	142 lbf∙in / 16.04 N∙m	

26 Ga (0.5 mm):	616 lbf / 2740 N	
24 Ga (0.6 mm):	884 lbf / 3932 N	
22 Ga (0.8 mm):	1079 lbf / 4799 N	

Pull Over Strength Steel

Pull Out Strength Steel	Pull Out Strength Wood
16 Ga (1.5 mm):	879 lbf / 3910 N	SPF 1" penetration	697 lbf / 3100 N	
14 Ga (1.9 mm):	1277 lbf / 5680 N	SPF 1-1/2" penetration	1038 lbf / 4617 N	
12 Ga (2.7 mm):	2185 lbf / 9719 N		

1 Pull out values based on 45 ksi cold formed sheet metal.
2 SFS 5625.19, 4812.11, 4381.07, 5057.19
3 S-120, SB3

Installation and Application Considerations
Tools: Metal to metal application: 0–1000 rpm screw gun equipped with depth sensing nose piece. Metal to wood application: 0–2500 rpm screw gun equipped with depth sensing nose piece.

Use of impact guns or hammer drills is not recommended.

Self-drilling metal thickness: sheet 0.018"–0.030" (0.46
mm–0.72 mm)

Special care needs to be taken when installing #14 ZAC Type AB fasteners into wood substrate less than 1” in thickness. Stripping or partially stripping the fastener out during installation compromises the clamp load and can affect the performance of the fastener.

Thickness is based on normal, single thickness purlin/girt or multiple material thickness combined for total. Minimum depth penetration into wood substructure: 1" (25.4 mm)

Metal thickness	Drill bit size 0.021"–0.026" (0.53 mm–0.66 mm)	1/8" (3.18 mm)
0.027"–0.050" (0.69 mm–1.27 mm)	5/32" (3.97 mm)
0.051"–0.075" (1.29 mm–1.9 mm)	#8 (5.05 mm)

© SFS, 07/2210,2US, V1.01

0.075"–0.110" (1.9 mm–2.79 mm)	#7 (5.11 mm)
The hole size determines installation performance and pull out strength.

US
T 800 234 4533
us.sfs.com

Canada
T 866 847 5400
ca.sfs.com

Metric values are approximate conversions.
All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (07/2021, V1.01)

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

#14 Stainless
	DF-S4-#14	

Features and Benefits
410 stainless steel provides resistance to corrosion in mild to light industrial environments
Extra stable #3 Phillips drive
Low profile truss head
13 threads per inch provides higher pull-out values

Application
Insulation and membrane attachment to steel or wood in a corrosive environment

Product Selection

Material No.	Fastener Length	Thread* Length	Description	Carton Wt. (lbs.)	Carton Qty.	
791371	1–1/2"	Full	DF-S4-#14x1-1/2-PH3-B	14	1,000	
791373	2"	Full	DF-S4-#14x2-PH3-B	18	1,000	
791376	3"	2–7/8"	DF-S4-#14x3-PH3-B	25	1,000	
791379	4"	3–7/8"	DF-S4-#14x4-PH3-B	32	1,000	
791381	5"	3–7/8"	DF-S4-#14x5-PH3-B	39	1,000	
791383	6"	3–7/8"	DF-S4-#14x6-PH3-B	46	1,000	
791385	7"	3–7/8"	DF-S4-#14x7-PH3-B	27	500	
791387	8"	3–7/8"	DF-S4-#14x8-PH3-B	30	500	
791389	10"	3–7/8"	DF-S4-#14x10-PH3-B	39	250	
1298264	12"	3–7/8"	DF-S4-#14x12-PH3-B	48	250	

2019 SFS Group USA, Inc. Technical changes reserved. 05/2019

*Note – Thread length measured from tip of the drill point to end of the threads.

US
T 800 234 4533
www.sfsintecusa.com

Canada
T 866 847 5400
www.sfsintec.ca

The details stated are results of tests and/or calculations and therefore are non-binding and do not represent guaranties or warranted characteristics for not specified applications. All calculations therefore have to be checked and approved by the responsible planner ahead of execution. The user is responsible to assure compliance with all applicable laws and regulations.

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

#14 Stainless
	DF-S4-#14	

DF-S4-#14-RevC

Coating and Corrosion
15/15 Kesternich per FM 4470
950 hour salt spray per ASTM B117 Passivated stainless finish

Approvals

State of Florida: FL20311

Performance Data1, 2,3
Material Strength
Tensile	4000 lbf / 17793 N	
Shear	2800 lbf / 12455 N	
Torsional	100 lbf∙in / 11.30 N∙m	

1 SFS-SC12250.10.17
2 SFS 5509.18
3 PLK Standard

Pull Out Strength Steel
22 Ga Grade 40 steel (0.8 mm):	428 lbf / 1904 N	
22 Ga Grade 80 steel (0.8 mm):	568 lbf / 2527 N	

Pull Out Strength Wood
19/32" (15.1 mm) FR Plywood (through penetration): 552 lbf / 2455 N

Installation and Application Considerations
Tools: 2000–2500 rpm screw guns with hardened #3 Phillips bit. The standard carton package includes one #3 Phillips
bit. Not recommended for use in heavy industrial or marine environments, including swimming pool enclosures. For these applications, contact SFS for a stainless fastener recommendation.

Material:
Steel thickness from 22 ga (0.030 in.) through 18 ga (0.048 in.): Min penetration: 3/4"
Wood 2x (1–1/2" thick): Min penetration: 1"
Plywood and OSB: Min through penetration: 3/4"

. Technical changes reserved. 05/2019

Use with:
Stress plates
Batten bar
Other attachment elements approved by the roofing system manufacturer for use with its products.

US
T 800 234 4533
www.sfsintecusa.com

Canada
T 866 847 5400
www.sfsintec.ca

Metric values are approximate conversions.
The details stated are results of tests and/or calculations and therefore are non-binding and do not represent guaranties or warranted characteristics for not specified applications. All calculations therefore have to be checked and approved by the responsible planner ahead of execution. The user is responsible to assure compliance with all applicable laws and regulations.

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

1/4-14 410 Stainless Lap
Panel to Panel Fastener	

Features and Benefits
410SS provides resistance to corrosion in mild to light industrial environments
High hex washer head provides driving stability
Self-drill point for fast installation
Available with no sealing washer or with aluminum bond seal washer

Application
Panel to panel side lap, end lap, and other stitch applications

Product Selection

Material No.	Fastener Length	
Thread Length*	Load Bearing Length	
Description	
Carton Wt. (lbs.)	
Carton Qty.	
	(in)	(mm)		(in)	(mm)				
791283	7/8"	22	Full	0.31"	8	SDL-S4-#14x7/8-HW5/16-AB19/32	38	2,500	

Plain product bagged 250 pieces, unless otherwise noted.
*Note – Thread length measured from tip of the drill point to top of the threads.

Installation and Application Considerations
Tools: 0–2000 rpm screw gun equipped with depth sensing nose piece.

Use of impact guns or hammer drills is not recommended.

Composite thickness should not exceed 0.095" (2.4 mm).

US
T 800 234 4533
us.sfs.com

Canada
T 866 847 5400
ca.sfs.com

Metric values are approximate conversions.

© SFS, 06/2021, US, V1.01

All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (06/2021, V1.01)

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

#12-14 410 Stainless SD3
Metal to Metal Fastener	

Features and Benefits
410SS provides resistance to corrosion in mild to light industrial environments
Precision cold forged point assuring superior strength and the fastest drilling time performance
Designed to have low driving and thread engagement torque and provide maximum clamp load
Available with no sealing washer or with aluminum bond seal washer

Application
Metal panel to light and medium gauge metal application

Product Selection

Material No.	Fastener Length	
Thread Length*	Load Bearing Length	
Description	
Carton Wt. (lbs.)	
Carton Qty.	
	(in)	(mm)		(in)	(mm)				
791271	1"	25	Full	0.35"	9	SD3-S4-#12x1-HW5/16-AB19/32	31	2,500	
791315	1-1/4"	32	Full	0.60"	15	SD3-S4-#12x1-1/4-HW5/16-AB19/32	38	2,500	
791340	1-1/2"	38	Full	0.85"	22	SD3-S4-#12x1-1/2-HW5/16-AB19/32	34	2,500	

Plain product bulk carton packed.
*Note – Thread length measured from end of pilot length to end of the threads.

Installation and Application Considerations
Tools: 0–2000 rpm screw gun equipped with depth sensing nose piece.

Use of impact guns or hammer drills is not recommended.

Fastener length should provide for a minimum of 3/16" penetration of fully developed threads into metal substrate.

US
T 800 234 4533
us.sfs.com

Canada
T 866 847 5400
ca.sfs.com

Metric values are approximate conversions.

© SFS, 06/20211, .U01S, V

All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (06/2021, V1.01)

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

METAL-TO-WOOD SCREWS

Zinc & SS Cap Heads | Stainless Steel FOR WARRANTED SYSTEMS & LONG-LIFE PERFORMANCE

PANEL-TITE® BURR BUSTER ZH
Zinc Die Cast Head
Use on 20yr warranty roof systems.
Carbon steel shank with TRI-SEAL® coating.
Provides outstanding corrosion protection.

PANEL-TITE® BURR BUSTER SS
304 Stainless Steel
304 SS BONDSEALER washer
Used in aluminum applications.
Preferred screw for treated lumber.

LOW ANGLE THREAD
Resists Loosening
SAW TOOTH THREAD
Lower Tapping Torque
MILLED SLOT
Penetrates Fast
BURR BUSTER® POINT
Reduces Burrs and Chips

Penetrates up to 20ga Steel

Penetrates Steel up to 20 ga.

Also available: Stainless Cap Head with Flange Sealer

Bagged 250pcs

Patented Anti-burr Thread and Point Technology!*

#10-12 ZINC CAP HEAD | 5/16” HWH
Washer: .565” Dia. / Aluminum to EPDM

#10-12 STAINLESS CAP HEAD | 1/4” HWH

Washer: .500” Dia. Undercut / EPDM Washer
#12-14 HIGH LOW TYPE 17 STAINLESS CAP HEAD | 5/16” HWH
Washer: .570” Dia. Undercut / EPDM Washer
#14-10 STAINLESS CAP HEAD | 5/16” HWH
Washer: .570” Dia. Undercut / EPDM Washer

ZINC CAP HEAD | TRI-SEAL® LONG-LIFE COATED

Size	Part #	Box
Qty	List
Price	
#10-12 x 1" Burr Buster	10100HWBB17CSTSZ	4,000		
#10-12 x 1-1/2” Burr-Buster	10150HWBB17CSTSZ	2,500		
#10-12 x 2” Burr Buster	10200HWBB17CSTSZ	2,000		
#10-12 x 2-1/2” Burr Buster	10250HWBB17CSTSZ	1,500		
#10-12 x 3” Burr Buster	10300HWBB17CSTSZ	1,000		
STAINLESS STEEL CAP HEAD | TRI-SEAL® LONG-LIFE COATED

Size	Part #	Box
Qty	List
Price	
#10-12 x 1" Burr Buster	10100HWBB17CSTSC	4,000		
#10-12 x 1-1/2” Burr-Buster	10150HWBB17CSTSC	2,500		
#10-12 x 2” Burr Buster	10200HWBB17CSTSC	2,000		
#10-12 x 2-1/2” Burr Buster	10250HWBB17CSTSC	1,000		
#10-12 x 3” Burr Buster	10300HWBB17CSTSC	1,000		
#12-14 x 1-1/2” Type 17	12150HW17CSTSSC	1,500		
#14-10 x 3-1/2” Type 17	14350HW17CSTSSC	1,000		

#10-12 304 STAINLESS STEEL
Washer: Stainless Steel

Attach metal panels with a 1-1/2"- 2" high rib height. Great for replacing screws that are stripped!

304 STAINLESS STEEL | PASSIVATED & TRI-SEAL® COATED

Size	Part #	Box
Qty	List
Price	
#10-12 x 1” Burr Buster	10100HWBB17S34BW	3,000		
#10-12 x 1-1/2” Burr Buster	10150HWBB17S34BW	2,500		
#10-12 x 2” Burr Buster	10200HWBB17S34BW	2,000		
#10-12 x 2-1/2” Burr Buster	10250HWBB17S34BW	1,500		

Diameter & Point: #10-12 Material: 304 Stainless Steel Plating: Passivated & TRI-SEAL® Head Style: 1/4” HWH
Thread: #10-12 Single Lead

DISCLAIMER: All information is non-binding and without guarantee. Before using the products, all specifications and calculations must be checked by a suitably qualified person and local regulations must be observed. This document is subject to revision. We reserve the right to make technical changes. (0321-1)
TRIANGLE FASTENER CORPORATION

*Pat. No.: 11,105,362
800.486.1832 | www.trianglefastener.com

Visit our website for the most up-to-date product and technical information!

MD36.0821

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

ALUMINUM RIVET INFO

250 Minimum Order Requirement
In-Stock Colors #42—#43—#44

Aged Copper Almond
Ash Gray Aztec Gold Banner Red Bone White Burnish Slate Cape Clue Charcoal Gray Cherokee Blue Classic Green Cocoa Brown Colonial Red Colony Green Copper Penny Cordovan Country Red

Dark Bronze Desert Sand Emerald Green Fern Green Hartford Green Hawaiian Blue Light Stone Mansard Brown Matte Black Medium Bronze Musket Gray Pacific Blue Polar White Red Clay Roman Bronze Royal Blue Rustic Red

Sage Sahara Tan Sierra Tan Seaport Slate Blue Slate Gray Snow White
Snowdrift White Stone White Teal Green Terra Cotta Winter Blue

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

AEP SPAN TECHNICAL BULLETIN
DISSIMILAR METALS

INTRODUCTION
AEP Span’s steel-based products, painted and bare, feature a metallic-coating that provides long-lasting resistance from corrosion. This coating is applied during the steel production process prior to the application of paint. Metallic-coatings consist of either zinc (sold as TruZinc® or galvanized) or a specialty mix of aluminum and zinc (sold as ZINCALUME®). Care must be taken during the design and installation phase of metallic-coated products to avoid the unintentional creation of galvanic corrosion. This rapid form of corrosion is induced
when metals of varying types (dissimilar metals) are installed in direct contact with one another in a corrosive environment.
GALVANIC CORROSION
Galvanic or bi-metallic corrosion is a reaction in which one metal will sacrifice itself (or dissolve) to protect the different, less active metal, leading to visible corrosion. Galvanic corrosion occurs between dissimilar metals in certain corrosive environments and typically requires three criteria in which to occur:
Two or more dissimilar metals,
Metal to metal contact, and
Both metals to reside in the same conducting solution/
corrosive environment, i.e. salt air or water.
Metals can be viewed as active or noble based on their position on the galvanic scale, simplified in Table 1 below. The further apart these metals are on this scale, the greater the potential for a reaction between the metals. In addition to the dissimilarity of the metals, the severity of the environment will influence the potential for galvanic corrosion. Common factors influencing environmental severity can include direct proximity to salt water or chemical spray, the frequency of breaking surf (which generates airborne salt-laden particulates), and how frequently the surface is rinsed by rainfall.

More Active Metals (Anode)
Zinc
ZINCALUME Steel
Aluminum Steel Lead Copper
Stainless Steel
Less Active or Noble Metals (Cathode)

.

Table 1: Galvanic Series of Metallic Activity

IN APPLICATION
Installations featuring galvanic corrosion are commonly attributed to improper fastener and accessory selection. This includes the use of stainless steel and copper products in direct contact with metallic-coated metal roofing and siding profiles.
Stainless-Steel Hardware (Clips, Fasteners, etc) Galvanic corrosion can be caused by stainless-steel fasteners, rivets, light fixtures, window frames and other accessories recessed in metallic-coated panels in corrosive environments.

Initially this may appear as the apparent bubbling of the painted metal roof or siding surface around the stainless-steel fixture. Often falsely identified as a paint failure, this bubbling is the steel underneath corroding, resulting in the loss of paint adhesion.
AEP Span’s stainless-steel hardware offering, such as clips and fasteners, are not intended to be used with ZINCALUME coated steel profiles in corrosive environments. In these environments stainless steel components should be used in conjunction with profiles fabricated out of aluminum.
Copper and Copper Treated Lumber
Metallic coated steel will experience accelerated corrosion when it is in contact with copper, this includes copper treated lumber. Leeching of copper from treated materials, such as through water run-off from rainfall or condensation, can result in corrosion without direct metal to metal contact. In these instances, the protective oxide film which naturally forms on aluminum-zinc coatings is broken down by copper in localized areas. Pitting corrosion ensues which is a highly accelerated form of attack. Zinc coatings are not generally subject to pitting but will demonstrate the effects of galvanic corrosion when installed in direct contact with copper.
AEP Span recommends avoiding the use of copper where galvanic corrosion may be a concern. If the use of copper cannot be avoided, AEP Span recommends that insulated copper or a protective coating over the copper be used
to prevent exposure. Any electrical terminals that utilize exposed copper should also be sealed with shrink tape or similar method This includes but is not limited to grounding wire for Photo Voltaic Arrays, Lightning Protection, and Pipe Penetrations.
Galvanized Steel and ZINCALUME Coated Steel Unpainted galvanized steel must not be used for roofing or rainwater goods (including valleys and gutters) to collect water runoff from ZINCALUME Steel or other more noble metals.
ZINCALUME Steel and painted ZINCALUME Steel can be used to collect water from galvanized catchment material. Irrespective of galvanic corrosion considerations, ZINCALUME Steel panels & gutters will typically give a longer service life than traditional galvanized steel. Neither product should be used as catchment material for roofs featuring more noble metals such as aluminum or copper.
WARRANTY IMPLICATIONS AND REMEDY
Product deterioration or corrosion created by the improper installation of dissimilar metals will void any warranty supplied by AEP Span. This includes product performance, paint system, and corrosion warranties.
If galvanic corrosion is identified, this issue must be rectified as promptly as possible due to the rapid rate at which it
can spread. Remedies may include the replacement of the panels impacted by corrosion and the substitution or relocation of the associated dissimilar metals. For more information on the identification or rectification of galvanic corrosion, please contact AEP Span.

Customer Service Center Tacoma, WA

Phone: 800-733-4955

Fax: 253-272-0791

For the most current versions of literature please visit www.aepspan.com

800-733-4955
aepspan.com

All information stated in the catalog is correct at time of printing and subject to change without notice.
©2022 ASC Profiles LLC.  All rights reserved. ZINCALUME® is a registered trademark of BlueScope Steel Ltd.	0822  Web