Metallics JSRM102P 12-24 x 1-1/2 in. Round Head Phillips Machine Screws - 18-8 Stainless - Each

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

A #3 Phillips driver. The recess on the JSRM102P is a Phillips with a recess diameter of 0.236 to 0.249 in. and a recess depth of 0.099 to 0.125 in., so a #2 bit will sit shallow and cam out under torque. Gaging depth for recess penetration runs 0.082 to 0.108 in.

Head height measures 0.139 to 0.153 in. and head width 0.382 to 0.408 in. That domed round head sits proud of the surface, so if you need the fastener flush in a countersunk hole or under a sliding cover plate, pick a flat head instead.

18-8 stainless is the standard austenitic grade for general corrosion resistance, and these JSRM102P screws are 18-8 throughout, so they hold up in wet interior spaces, exterior boxes and damp plant rooms far better than plain or zinc-plated steel. For salt spray or chlorinated environments, 316 is the step up.

They ship in a jar of 100, which is also the order minimum. There is no loose single-piece option, so plan on 100 pieces per line. Jar weight is 1.51 lbs.

Tensile strength is listed at 80,000 psi minimum with hardness Rockwell B85-B95, which puts the JSRM102P in the range of a commercial-grade fastener rather than a high-strength alloy bolt. Metallics notes that tensile values for stainless screws are approximations, since there is no single performance standard for stainless machine screws. For structural loads, use a graded steel bolt.

Machine screws like the JSRM102P have straight machine threads, not a cutting point, so the 12-24 thread needs a pre-tapped hole or a mating 12-24 nut. The 1-1/2 in. length gives you room to pass through a plate or bracket stack and still pick up enough thread on the far side.

The SRM round head Phillips stainless line runs in other diameters, lengths and pack quantities, available by request. JSRM102P is the 12-24 x 1-1/2 in. jar of 100.