Metallics JNCHTL14SS Nut 1/4-20 Hx Top Locknut 18-8 SS (Jar 100)

These are 1/4-20 hex top locknuts, so they thread onto any standard 1/4-20 UNC bolt, screw, or threaded rod. The 20 threads per inch is the coarse series, which is what you find on 1/4 inch rod used for strut, channel, and conduit hanger work. They will not fit 1/4-28 fine thread fasteners.

They are 18-8 stainless steel, the austenitic 300 series grade used for corrosion resistance. That makes them suitable for exterior, wet, and damp location work where a plain or zinc plated nut would rust. Pair them with stainless bolts or rod to avoid mixing metals in the connection.

A top locknut (also called a top lock or stover style nut) locks mechanically through a deformed top thread section rather than a nylon ring, so it holds under vibration without relying on a plastic insert. That matters because nylon insert nuts are limited by temperature and generally are not reused; an all metal top locknut takes heat and is the choice near ballasts, motors, and other warm equipment. A plain hex nut gives no locking action at all and needs a lock washer or a jam nut to stay put.

Yes. The 1/4-20 thread is a common size on light duty hanger and channel hardware, and the locking top keeps the nut from backing off where vibration from fans, pumps, or HVAC equipment would loosen a plain nut. Note these are nuts only, so bolts, rod, washers, and the channel hardware itself are separate items.

One hundred nuts, packaged in a jar rather than a loose bag. The jar keeps the count contained on a service truck or in a shop bin, which is the usual reason electrical and MRO buyers take this pack form for small fasteners.

Order Metallics JNCHTL14SS. That number covers the 1/4-20 hex top locknut in 18-8 stainless, supplied in a 100 count jar, and it is the single configuration sold under it, so there is no finish or pack option to specify.