Metallics TGW9151 9-15 x 1 in. 1/4 Hex Head Metal to Wood Screws with Washer - All-Weather - Each

The TGW9151 is a metal-to-wood screw with a washer, used to fasten sheet metal down to wood framing or blocking. It is 9-15 x 1 inch with 15 threads per inch, a 1/4 inch hex head and hex drive, and the bonded washer under the head seals and spreads load on the metal. Metallics lists it for the electrical, plumbing, heating and air conditioning trades, so it is the screw used for hanging strut, straps, boxes and duct to wood.

Metallics lists the TGW9151 as both Buy American compliant and ARRA compliant, which is what a public-works or federally funded project submittal asks for. Country of origin is listed as multiple.

No, this one is built for wood. The TGW9151 is a metal-to-wood screw, meaning it passes through sheet metal and threads into wood framing. For steel studs or metal framing you want a self-drilling sheet metal screw with a drill point instead.

Yes. The TGW9151 has a zinc/all-weather coating, which is why it works for exterior and damp-location fastening such as rooftop duct supports, exterior conduit straps and outbuilding work. The washer under the head helps seal the hole on sheet metal.

A 1/4 inch hex driver or nut setter in an impact or drill. The head is a 1/4 hex with hex drive, so there is no Phillips or square recess, and a magnetic nut setter is the practical way to run these overhead.

No. The washer is part of the fastener on the TGW9151, so there is nothing else to buy or hold in place while you drive it. That is the difference between this and a plain hex head metal-to-wood screw.

They ship in a jar, with a minimum of 50 each. The jar weighs 0.43 lbs and measures 3 x 2.15 x 3 inches, so it drops into a van bin or gang box easily.