Metallics JSRM1441 Screw 10-24 x 1-1/2 RH SL MS 316 SS (Jar 100)

Type 316 stainless steel. Among common stainless fasteners, 316 is the one with molybdenum added, which is why it is specified for coastal, marine, wastewater, pool and chemical exposure where plain 304 stainless will show rust staining or pitting.

100 screws per jar. The packaging is a jar rather than a box or bag, which is what MRO and electrical stockroom buyers usually want for loose fasteners on a shelf or a service truck.

That's the intended use. The JSRM1441 is carried as an electrical fastener, and 10-24 is the standard thread used in enclosure and box hardware. The round head seats on the surface rather than countersinking, so it suits a flat mounting pad, not a chamfered or countersunk hole, and the slotted drive takes a flat blade screwdriver. At 1-1/2 inches of length it is long enough to pass through a bracket or spacer stack before it picks up the threads.

No. A 10-24 machine screw has a blunt, fully threaded machine thread and needs a pre-tapped hole or a mating nut. For bare sheet metal with no tapped hole, use a self-drilling or sheet metal screw instead, or install a 10-24 nut or clip nut behind the panel.

For dry interior work, 18-8 (304) stainless or a zinc plated machine screw is normally enough and 316 is more than the job needs. Specify the 316 version, like the JSRM1441, where the fastener sees salt air, chlorides, washdown or chemical exposure, since those are the conditions where 304 corrodes and 316 holds up.