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SPAX 1/4-in x 2-1/2-in 2-1/2-in Black Coated Washer Exterior/Interior Exterior/Interior Structural Wood Screws (12-Pack)

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SPAX® T-Star washer head Powerlags® designed with low-profile, large diameter head design provides outstanding clamping force and improved aesthetics - The T-Star drive offers excellent bit engagement without requiring a special driver bit - Available in 1/4”, 5/16”, and 3/8” diameters - SPAX HCR® Coating is approved for use in treated lumber.
Cold-rolled “carbon steel” wire heat treated to Grade 5 durability and plated with an HCR® (High Corrosion Resistance) double barrier coating -HCR is tested and recognized for use in ground contact pressure treated lumber for exterior, freshwater general construction applications (eg AWPA UC1-UC4A, UCFA).
Powerlags® are the ideal replacement for conventional lags• IRC / IBC Code Compliant DrJ TER No 1912-07 Structural Fastener Properties• DrJ Technical Evaluation Reports (TER No 1711-01; Deck Ledger Attachment and TER No 1802-03; Multi-Ply; Sawn lumber assemblies and engineered wood - LVL, PSL and LSL assemblies)• No pre-drilling required (1/4" and 5/16")Note: Lead hole of 11/64" (0.172") diameter is required for 3/8"• Patented thread serrations require up to 40% less driving torque to increase installation speed while helping prevent cracking in wood• Built-on washer head designs eliminate the need and extra cost of a separate washer• Fastener length stamp on the head provides convenient identification without measuring and aids on-site inspections

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SPAX® T-Star washer head Powerlags® designed with low-profile, large diameter head design provides outstanding clamping force and improved aesthetics - The T-Star drive offers excellent bit engagement without requiring a special driver bit - Available in 1/4”, 5/16”, and 3/8” diameters - SPAX HCR® Coating is approved for use in treated lumber.
Cold-rolled “carbon steel” wire heat treated to Grade 5 durability and plated with an HCR® (High Corrosion Resistance) double barrier coating -HCR is tested and recognized for use in ground contact pressure treated lumber for exterior, freshwater general construction applications (eg AWPA UC1-UC4A, UCFA).
Powerlags® are the ideal replacement for conventional lags• IRC / IBC Code Compliant DrJ TER No 1912-07 Structural Fastener Properties• DrJ Technical Evaluation Reports (TER No 1711-01; Deck Ledger Attachment and TER No 1802-03; Multi-Ply; Sawn lumber assemblies and engineered wood - LVL, PSL and LSL assemblies)• No pre-drilling required (1/4" and 5/16")Note: Lead hole of 11/64" (0.172") diameter is required for 3/8"• Patented thread serrations require up to 40% less driving torque to increase installation speed while helping prevent cracking in wood• Built-on washer head designs eliminate the need and extra cost of a separate washer• Fastener length stamp on the head provides convenient identification without measuring and aids on-site inspections