Metallics JSSMSS105 Screw M10 x 10 SKT S-Scr Cup St-Blk (Jar 100)

It's an M10 x 10 mm socket set screw with a cup point, in black steel. Metric coarse M10 thread, 10 mm overall length, driven with a hex key through the socket in the head rather than a screwdriver. Cup point means the tip is a hollowed ring that bites into a shaft or bus for a locking grip, which is the usual choice for holding collars, pulleys, and conductors in setscrew lugs.

100 screws per jar. Metallics supplies these in a jar pack, which is the handy size for a service van or a shop bin where you're pulling a few at a time rather than consuming a full box on one job.

Use the cup point, which is what the JSSMSS105 is, when you want maximum holding on a shaft or conductor and you don't mind that the ring edge leaves a small indent. Switch to a flat point when the mating part has to come off clean and undamaged, or when it seats against a hardened pad or an already flatted shaft. Cone and dog points are for permanent location in a drilled or milled seat.

Order Metallics JSSMSS105. That number covers the M10 x 10 cup point socket set screw in black steel, supplied 100 to the jar, and it's the only configuration under that number so there's no finish or length option to specify.

Yes, that's the intended use. Metallics catalogs the JSSMSS105 as electrical fastener stock, and an M10 cup point socket set screw is the type used to clamp conductors in setscrew lugs, split bolts, and bus connectors. Match the M10 thread to the tapped hole in your lug body before swapping, since a replacement screw has to thread the existing boss.