Metallics JTLN7SS Nuts 3/8-16 Hx Keps Locknut SS (Jar 100)

Yes. The JTLN7SS is a 3/8 inch hex keps locknut cut at 16 threads per inch, so it runs onto any 3/8-16 bolt, machine screw or all-thread rod. If your rod is 3/8-24 fine thread, this is the wrong nut.

No separate washer needed. A keps nut ships with an external tooth lock washer already attached and free to spin on the nut body, so you place one part instead of two. As you tighten, the washer teeth bite the mounting surface and resist the nut backing off under vibration. That is why these are used on strut, panel and equipment mounting where a loose nut means a return trip.

No. The JTLN7SS is sourced from multiple countries of origin and is listed as neither Buy American compliant nor ARRA compliant. For work carrying domestic sourcing requirements you will need a domestically produced locknut instead.

The nut is 18-8 stainless steel, which is the standard austenitic grade for corrosion resistance in damp and outdoor conditions. Hardness runs Rockwell C40-50. If you are fastening into or alongside stainless strut or stainless hardware, this keeps the joint from mixing metals.

They come 100 nuts to a jar, and the jar is the minimum order unit, so you buy in full jars of 100. The packed jar weighs 1.79 lbs. Metallics does make other sizes and quantities in this line available by request.

The JTLN line is stocked for electrical, plumbing, heating and air conditioning work: securing enclosures and device plates, hanging strut and trapeze supports, duct and equipment brackets, anywhere a 3/8-16 fastener sees vibration. The stainless body makes it suitable for wet locations, mechanical rooms and rooftop equipment where a plain zinc nut would rust.