Fastener designed to attach steel roofing & siding used in post-frame & residential metal roofing applications.
5/16” cupped HWH with a molded ZAMAC Zinc-Aluminum alloy provides lifetime protection against red rust on the head & washer. (You may obtain a free copy of the written warranty upon request.)
ZXL™ is an excellent choice for GALVALUME & other long-life metal roof panels.
Threads transition from fine to coarse to generate superior holding strength in various wood substrates.
Micro-Bit point reduces metal shavings that can embed themselves in the rubber washer.