BLAZER Zinc Cap and Stainless Cap Self-Drilling Screws

From the Total Cladding and Roofing Technical Library

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Zinc cap head self-drilling screws with EPDM sealing washers in several lengths and points

BLAZER Zinc Cap and Stainless Cap Self-Drilling Screws

Manufacturer
Triangle Fastener Corporation
Product
BLAZER Zinc Cap and Stainless Cap Self-Drilling Screws
Status
Current
Market
United States
Last verified
October 15, 2026

BLAZER Zinc Cap and Stainless Cap Self-Drilling Screws

BLAZER Zinc Cap and Stainless Cap Self-Drilling Screws fasten exposed-fastener metal roofing and siding panels to steel framing. Each screw has a 5/16" hex washer head with an EPDM sealing washer. The washer is non-conductive. Long-pilot (LP) points are made for metal roofing and siding.

The stainless cap version has a 304 stainless steel head, passivated, with a carbon steel body and a .100" thick washer. The zinc cap version has a Zamac 5 zinc alloy head that will not red rust, with a carbon steel thread and a .125" thick washer. The body of both is coated with TRI-SEAL long-life coating. Sizes run from #12-14 to 1/4-14 and #12-24, with lengths from 7/8" to 4".

Sizes and drill points

  • #12-14 BLAZER-2/3 LP: 1 to 3 in long; load bearing length .250 to 2.25 in on the stainless cap, .250 to 2.000 in on the zinc cap
  • 1/4-14 BLAZER-1 VRT: 7/8 in on the zinc cap; 7/8 to 1-1/8 in on the stainless cap; load bearing length .325 to .750 in
  • 1/4-14 BLAZER-3: 1-1/4 to 4 in long; load bearing length .625 to 3 in
  • #17-14 TYPE AB W/VRT: 1 in long; load bearing length .750 in
  • #12-24 BLAZER-5: 1-1/4 to 2 in long; load bearing length .500 to .750 in
  • #12-14 | 1/4-14 BLAZER-3: 1-7/8 to 4 in long; load bearing length .875 to 3.1875 in

Data sheets and technical documents

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Head, drive and coating

  • Head type: 5/16" hex washer head (HWH); 3/8" hex washer head sizes are available on request
  • Stainless cap head: 304 stainless steel, passivated; more than 2,000 hrs salt spray
  • Zinc cap head: Zamac 5 zinc alloy; no red rust
  • Body: carbon steel with TRI-SEAL long-life coating; 1,000 hrs salt spray
  • Washer: EPDM, non-conductive; .100" thick on the stainless cap, .125" thick on the zinc cap