Carbon Steel Self-Tapping Screws

From the Total Cladding and Roofing Technical Library

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Carbon steel self-tapping hex washer screws with sealing washers in several lengths on a gray surface

Carbon Steel Self-Tapping Screws

Manufacturer
Triangle Fastener Corporation
Product
Carbon Steel Self-Tapping Screws
Status
Current
Market
United States
Last verified
October 15, 2026

Carbon Steel Self-Tapping Screws

Carbon steel self-tapping sheeting screws from Triangle Fastener Corporation. They tap their own threads, so the screw drives into thin steel or wood without a pilot hole in the sheet. The range covers Type A, Type AB and Type B points, a Type BP alignment point, and a #17-14 Type AB. They are used to fasten insulated metal panel roofs and walls and other sheeting to steel and wood.

Type A tapping range is up to 14ga steel and wood. Type AB taps up to 10ga steel and wood. Type B taps 14ga to 1/2 in. The #17-14 Type AB taps up to 10ga. The 1/4-14 Type BP is used for alignment into structure. Screwgun speed is 1,000 rpm maximum. Screws come with or without BOND-SEAL sealing washers, and with TRI-SEAL long life coating. Lengths reach 8 in across the full line.

Sizes

  • #14-10 Type A: 3/4, 1, 1-1/2, 2, 2-1/2, 3, 4, 5 and 6 in long; tapping range up to 14ga and wood
  • 1/4-14 Type AB: 3/4, 1 and 1-1/2 in long; tapping range up to 10ga and wood
  • 1/4-14 Type B: 1, 1-1/2, 2, 2-1/2, 3, 4 and 5 in long; tapping range 14ga to 1/2 in
  • #17-14 Type AB: 1 and 1-1/2 in long; tapping range up to 10ga

Data sheets and technical documents

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Head, drive and coating

  • Head: 3/8 in hex head (standard)
  • Head: 3/8 in hex washer head (#17-14 VRT only)
  • Head: 3/8 in zinc cap head, offered on #14-10 x 1, #14-10 x 1-1/2, 1/4-14 Type AB x 3/4 and x 1, and #17-14 Type AB sizes
  • Sealing washers: BOND-SEAL, available with and without; oversize or special sealing washers available
  • Coating: TRI-SEAL long life coating, over 1,000 hours salt spray resistance (ASTM B117)
  • Paint: KALIDA-KOTE paint process to match a specific color
  • VRT technology on #17-14 Type AB x 1 gives 3-1/2 times more back-out resistance than a standard thread, supplied with TRI-SEAL long life coating