Metallics JSPM103SS 12-24 x 1 in. Pan Head Slotted Machine Screws - 18-8 Stainless - Each

Yes. The Metallics JSPM103SS is a 12-24 machine screw, 24 threads per inch, which is the thread used for outlet box, device ring, and fixture-stud tapped holes in standard steel boxes. At 1 inch long it gives you reach through a plaster ring or an extension ring rather than just a flush box face.

They are 18-8 stainless, the austenitic grade used where plated carbon steel would rust, so they hold up in wet-location boxes, exterior fixtures, and washdown areas. Note the tensile figure is 80,000 psi minimum, lower than a hardened alloy screw, so they are fastening hardware, not structural bolting.

Both the Buy American and ARRA compliance flags on the JSPM103SS read compliant. Country of origin is listed as multiple, so if your submittal needs a single named country of manufacture, request documentation on the specific lot.

They ship in a jar of 100, which is also the order minimum. The jar is the only pack configuration for the JSPM103SS.

Head width runs 0.407 to 0.425 in. with a head height of 0.112 to 0.125 in. That spreads over a slightly worn or oversized tapped hole while keeping a low profile under a cover plate or a fixture canopy. Dimensions are held to ASME B18.6.3-2010.

Hardness on these is reported as Rockwell BBS-B9S against the SAE material standard, with 80,000 psi minimum tensile. Stainless galls and shears more readily than a hardened plated screw, so seat them firmly and stop. Metallics also notes tensile values for stainless screws are approximations, since there is no single performance standard for stainless machine screws.

The JSPM103SS uses a slotted drive, slot width 0.056 to 0.067 in. and depth 0.061 to 0.077 in., so it drives with a standard flat blade, typically the screwdriver blade already on an electrician's 11-in-1. Slotted lets you feel the seat and back off without cam-out on soft stainless; if your crew standardizes on a bit driver, a Phillips pan head is the easier match.