Metallics JTLN28 Nuts 1/4-28 Hx Keps Locknut St-zn (Jar 100)

Yes. The JTLN28 is a 1/4-28 hex keps locknut, 28 threads per inch, which is the UNF (fine) pitch for a 1/4 inch fastener. It will not run onto a 1/4-20 coarse bolt, so if the screws on your job are standard 1/4-20, you need the coarse version instead.

A keps nut (also called a K-lock) carries a free spinning toothed washer captive on the nut face, so it locks and spreads load in one piece. No separate washer is required. On the JTLN28 that washer measures 0.494 to 0.506 inches outside diameter, so plan for roughly a half inch bearing footprint around the hole.

The JTLN28 is flagged compliant for both Buy American and ARRA. Country of origin is China, so if your specification requires domestic melt and manufacture rather than the compliance flag, confirm which standard the contract is written to before you submit.

They ship as a jar of 100 count, and 100 is the order minimum, so the jar is the smallest unit. A full jar weighs 0.69 lbs. Other sizes and quantities can be arranged by request if 1/4-28 in a hundred-count is not what the job needs.

The JTLN28 is steel with a zinc finish and runs Rockwell C38-44, so the toothed washer bites and holds rather than deforming under repeated tightening. That hardness range is why keps nuts are used on panel, strut and enclosure assembly where vibration would back off a plain hex nut.

It is a zinc plated steel hex lock nut with an integral serrated washer, not a listed grounding fitting. The serrations do help maintain clamp load on a mechanical connection, but for a bonding point specified to a particular listing, use a fitting rated for that purpose and keep the JTLN28 for general mechanical assembly of panels, boxes and strut hardware.