SPAX 1/4-in x 4-1/2-in Black Coated Washer-Head Exterior Structural Wood Screws (500-Pack) 3581820701550

The SPAX Factor – For the craftsman that concentrates on the details, We Work for You. For the Pro that puts qualify first, we help you create stronger connections, enhance performance and improve results when your reputation is on the line. Say Good Bye to your fathers traditional lag. SPAX PowerLags offer superior installation performance and durability over traditional lag screws and carriage bolts for structural wood construction. Made of carbon steel and coated for long term durability to ensure your project endures. U.S made SPAX is your trusted partner for your fastening needs. Do it Once, Do it Right with SPAX.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).The ideal replacement for the conventional lag – IRC/IBC Code Compliant: TER-No 1912-07