Curtain Wall Solutions

Flex5 Carbon Steel Grade 5 Performance Self-Drill Fasteners

For curtain wall, solar panel and fenestration systems

Flex5 self-drilling fasteners are made from alloy steel and are manufactured with a selective hardness for higher ductility

• Diameters: #10, #12 and #14
• Head Styles: Hex washer head, Phillips undercut flat
• Drill points: SD3, SD4, SD5
• Finish: vistaCorr™ with 1000h salt spray (per ASTM B117)

Product Data Sheet - PDF, 1.03 MB

ICC-ES Evaluation Report: ESR-3870 Report - PDF, 0.69 MB

1/4-14 SD2 Bi-Met 300®

For light and medium gauge metal connections, curtain wall and building envelopment attachment or dissimilar metal connections

304 stainless (bi-met) with carbon drill point

• Drill capacity: 0.105" (2.7mm) max
• Diameter: 1/4" with 14 threads per inch
• Head: 3/8" AF hex washer head

Product Data Sheet - PDF, 0.15 MB

1/4-14 SD3 Bi-Met 300®

For light and medium gauge metal connections, curtain wall and building envelopment attachment or dissimilar metal connections

304 stainless (bi-met) with carbon drill point

• Drill capacity: 0.150" (3.8mm) max
• Diameter: 1/4" with 14 threads per inch
• Head: 3/8" AF hex washer head

Product Data Sheet - PDF, 0.14 MB

1/4-20 SD4 Bi-Met 300®

For heavy gauge metal connections, curtain wall and building envelopment attachment or dissimilar metal connections

304 stainless (bi-met) with carbon drill point

• Drill capacity: 0.312" (7.9mm) max
• Diameter: 1/4" with 20 threads per inch
• Head: 3/8" AF hex washer head

Product Data Sheet - PDF, 0.15 MB

1/4-20 SD5 Bi-Met 300®

For heavy gauge metal connections, curtain wall and building envelopment attachment or dissimilar metal connections

304 stainless (bi-met) with carbon drill point

• Drill capacity: 0.500" (12.7mm) max
• Diameter: 1/4" with 20 threads per inch
• Head: 3/8" AF hex washer head

Product Data Sheet - PDF, 0.15 MB

SX3 Stainless Self-Drill

Ideal for light gauge metal to metal

304 stainless (bi-met) with carbon drill point

• Drill capacity: .035"-.098" (.88-2.5mm)
• For max build up to .787" (20mm)
• Diameter: #14 with 11 threads per inch
• Head: 5/16" AF hex washer head
• Available with 5/8" stainless bondSeal washer

Product Data Sheet - PDF, 0.16 MB

SX5 Stainless Self-Drill

Ideal for medium thickness metal to metal

304 stainless (bi-met) with carbon drill point

• Drill capacity: .060"-.157" (1.5-4mm)
• For max build up to 3-3/4" (270mm)
• Diameter: #12 with 14 threads per inch
• Head: 5/16" AF hex washer head
• Available with 5/8" stainless bondSeal washer

Product Data Sheet - PDF, 0.16 MB

SX14 Stainless Self-Drill

Ideal for heavy-duty metal to metal

304 stainless (bi-met) with carbon drill point

• Drill capacity: .157"-.550" (4-14mm)
• For max build up to 2.283" (58mm)
• Diameter: #12 with 14 threads per inch
• Head: 5/16" AF hex washer head
• Available with 5/8" stainless bondSeal washer

Product Data Sheet - PDF, 0.16 MB

Custom Engineered Curtain Wall Fastener Solutions

The SFS Engineering Department designs custom made fasteners to be used in various curtain wall systems

  • Customer specific in-house design to meet your requirements
  • Own internal test lab for corrosion and structural fastener performance evaluation

Find the SFS fastener color code matched to your OEM panel

Fastener Color Selector Tool

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For more information, contact:

in the U.S.:
» 1-800-234-4533
» us.construction@sfsintec.biz

in Canada:
» 1-866-847-5400
» ca.info@sfsintec.biz