Metallics JFWP9SS 6 x 1/2 in. Flat Head Phillips Wood Screws - 18-8 Stainless - Each

The JFWP9SS is a #6 x 1/2 inch flat head Phillips wood screw in 18-8 stainless, sold in a jar with a 100-piece minimum. The jar is the order unit, so a single order gets you 100 screws rather than one.

Yes, if the countersink matches the head. The flat head measures 0.244 to 0.279 inch across with a head height of 0.083 inch, so an 82 degree countersink sized for a #6 screw brings it flush or slightly below the surface.

At 1/2 inch overall length, the JFWP9SS is for thin attachments: fastening a cover plate, strap, bracket or thin trim to a substrate, or anywhere a longer screw would punch through the back. If you are anchoring into framing through drywall or sheathing, this is too short and you want a longer screw in the same series.

No. These screws are not Buy American compliant and are not ARRA compliant, with country of origin listed as multiple. For a federally funded job carrying domestic sourcing requirements you need a domestically produced fastener instead.

A #2 Phillips bit. The recess is 0.161 to 0.174 inch in diameter with a 0.083 to 0.106 inch depth, so a #1 bit will spin out and a #3 will not seat.

18-8 stainless is the material, and these are supplied bare without any added plating or coating. That makes them a reasonable pick for exterior trim, damp mechanical rooms, and coastal-adjacent work where a plain steel screw would rust and bleed through finish. There is no corrosion rating published for them, so treat the material itself as the spec.

They have a tapered point, not a self-drilling or type-17 auger tip, so they pull themselves into softwood but should be pre-drilled in hardwood or near an edge to avoid splitting. Thread count is 18 per inch, and at 1/2 inch long the thread runs nearly to the underside of the head, so almost the whole screw is engaging material.

Head, thread, and recess dimensions are built to ASME B18.6.1, with the thread specifically to ASME B18.6.1-1997. That is the governing standard for wood screws, so the fastener will match a submittal or spec calling out B18.6.1 geometry.

Metallics lists the field application as the electrical, plumbing, heating, and air conditioning industries. In practice that means mounting straps, boxes, clamps, plates, and small brackets to wood where a stainless screw is wanted for corrosion or appearance. The jar pack suits a van or an MRO shelf rather than a single install.