Nuts 5/16-18 Hx Keps Locknut SS (Jar 100)
Features
- This is the most popular type of locknut because of its versatility, cost and ease of installation. Doesn't gall screw thread.
- Made to American Standard Dimensions
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Division:
- Electrical H1
- Fastener Head Width:
- 0.489 - 0.500 in.
- Fastener Height:
- 0.258 - 0.273
- Fastener Width:
- 0.557 - 0.577
- Field Application:
- Width is Wrench Size
- Hardness:
- Rockwell C40-50
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Lock_Nut_Steel_Zinc_and_18-8.pdf
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 2.7 in
- Product Length:
- 3 in
- Product Weight:
- 1.18 lbs
- Product Width:
- 3 in
- Sub Division:
- Electrical-E H2
- Thread Direction:
- Right Hand
- Thread Per Inch:
- 18
- Thread Type:
- UNC
- Washer Od:
- 0.579 - 0.592 in.
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Hexagonal Lock Nut
- Type2:
- Hexagonal Lock Nut
- Series:
- JTLN
- Product Details:
- Hexagonal Lock Nut
- Product Material:
- 18-8 Stainless Steel
Metallics JTLN6SS – Frequently Asked Questions
1) What thread does the Metallics JTLN6SS keps locknut take?
It's a 5/16-18 nut: UNC coarse thread, 18 threads per inch, right-hand. It threads onto any 5/16-18 UNC bolt or machine screw running right-hand.
2) Is the JTLN6SS locknut stainless, and will it hold up outdoors or in a damp mechanical room?
The nut is 18-8 stainless steel, which is the austenitic grade normally specified for wet interior and general exterior service. Hardness runs Rockwell C40-50.
3) Do I still need a separate washer with a keps locknut?
No. A keps nut carries a free-spinning toothed washer captive on the nut, so the washer and the locking action come as one piece. The washer OD on the JTLN6SS measures 0.579 to 0.592 inch, and overall nut height is 0.258 to 0.273 inch, so plan for that much stack under the fastener. If you need broader bearing area on sheet metal or a slotted strut, add a flat washer under the nut.
4) Does the Metallics JTLN6SS locknut meet Buy American and ARRA requirements for a federal or institutional job?
Metallics lists the JTLN6SS as compliant for both ARRA and Buy American. Country of origin is recorded as multiple, so if your specification requires a single named origin on the submittal, confirm the origin on the lot you receive.
5) Will a keps locknut chew up the bolt threads like an all-metal lock nut can?
No. The locking is done by the captive toothed washer biting the work surface, not by distorted threads, so it doesn't gall the screw thread. That's also why it's the most common locknut choice: low cost and it spins on with a plain socket, no prevailing-torque drag. For repeated removal and reinstallation on the same fastener, a nylon-insert nut is the usual alternative.
6) How many 5/16-18 stainless keps nuts come in a jar of the Metallics JTLN6SS?
100 pieces, packed in a jar, and 100 count is also the order minimum. The jar weighs 1.18 lbs.
7) Can I get this keps locknut in other thread sizes or a different pack quantity?
The JTLN series covers other sizes and quantities by request beyond the 5/16-18 stainless jar of 100. If you're standardizing a facility on one locknut type across several bolt diameters, ask for the sizes you need rather than mixing nut styles.
How fast can I get the Metallics JTLN6SS delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Metallics JTLN6SS come with a warranty?
Absolutely. The Metallics JTLN6SS is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Metallics JTLN6SS?
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