Metallics TGW9151M 9-15 x 1 in. 1/4 Hex Head Metal to Wood Screws with Washer - All-Weather - Each

The TGW9151M is a #9 diameter, 1 inch long metal-to-wood screw with a bonded washer, used to fasten sheet metal down to a wood substructure, for example metal roofing or siding panels over wood purlins or decking. It has 15 threads per inch and a 1/4 inch hex head driven with a hex bit, so it runs in fast with a standard impact driver or screw gun.

Yes. The TGW9151M carries a zinc/all-weather coating, which is what the "all-weather" designation in the name refers to, so it is intended for exterior metal-to-wood applications. The washer under the hex head seals against the panel at the fastening point.

They ship as a box of 1,000. The order minimum is 1,000 pieces, so this is a bulk box rather than a small contractor pack, and it weighs 7.48 pounds.

A 1/4 inch hex driver (nut setter). The head is a 1/4 hex with hex drive, so there is no Phillips or square recess, and a magnetic 1/4 inch nut setter in a drill or impact driver is the right tool for running them.

The TGW9151M is flagged compliant for both Buy American and ARRA, which is what a government, school, or institutional procurement office needs on file for federally funded work. Country of origin is listed as multiple.

15 threads per inch on a #9 shank is the standard thread pitch for a metal-to-wood (Type 17 style) fastener. It is coarse enough to pull and hold in softwood framing while still drawing the sheet metal tight against the wood. If you are fastening metal panel to a steel purlin instead of wood, this is the wrong screw and you want a finer-pitch self-drilling metal-to-metal screw.