Metallics JRMN102 Screw 1/4-20 x 1-1/4 RH SL MS Nylon (Jar 100)

Yes. The JRMN102 is a nylon machine screw, so it does not conduct current and will not corrode or gall the way a steel or brass screw can. That is why it is carried as an electrical fastener: typical uses are mounting insulating barriers, non-metallic covers, terminal blocks and standoffs where you cannot have a metal fastener bridging to a live part or a grounded enclosure.

It will thread into any standard 1/4-20 tapped hole, insert, or hex nut, since 1/4-20 is a standard Unified coarse thread. The limit is grip length, not thread: at 1-1/4 inches overall under a round head, you have about an inch and a quarter of usable shank, so stack your material plus nut thickness and make sure it comes out under that.

One hundred screws per jar. The JRMN102 ships as a jar pack, which is the usual way these get stocked on a van or a shop shelf, so you are buying by the jar rather than by the piece.

Pick nylon like the JRMN102 when the fastener must not conduct, must not short across terminals, or is going into a plastic cover or insulating barrier where a metal screw would strip or create a path to ground. Go stainless or steel when the joint carries real mechanical load, needs high torque, or sees heat. Nylon has far lower tensile and torque capacity than metal, so snug it, do not drive it down hard.

No. The JRMN102 takes a standard flat-blade screwdriver. Use a blade that fills the slot width to avoid chewing the nylon head, and drive by hand rather than with an impact driver, since a powered driver will cam out and shear a plastic head easily.