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Nuts 1/4-20 Hx Ny-Ins Locknut St-zn (Jar 1000)
Features
- 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
- Dimensional Standard:
- ASME B18.16.6
- Division:
- Electrical H1
- Fastener Head Height:
- 0.298 - 0.328 in.
- Fastener Head Width:
- 0.430 - 0.439 in.
- Fastener Height:
- 0.225
- Field Application:
- Width is Wrench Size
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Nylon_Insrt_Lck_Nut_Steel_Zinc.pdf
- Order Minimum Imperial:
- 1000
- Order Minimum Uom Imperial:
- TH
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 7.25 in
- Product Length:
- 4.5 in
- Product Weight:
- 7.66 lbs
- Product Width:
- 4.5 in
- Sub Division:
- Electrical-E H2
- Thread Direction:
- Right Hand
- Thread Per Inch:
- 20
- Thread Standard:
- ANSI/ASME B1.1
- Thread Type:
- UNC
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Hexagonal Nylon Insert Lock Nut
- Type2:
- Hexagonal Nylon Insert Lock Nut
- Series:
- JNYN
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Nylon Insert Lock Nut
- Product Color:
- Silver
- Product Material:
- Steel
Metallics JNYN163M – Frequently Asked Questions
1) What thread size and pitch is the Metallics JNYN163M nylon insert lock nut?
It's a 1/4-20 nut: 1/4 inch nominal with 20 threads per inch, coarse UNC, right hand thread, made to ANSI/ASME B1.1. So it mates with any standard 1/4-20 UNC bolt, screw or threaded rod. If your rod is 1/4-28 fine thread, this is the wrong nut.
2) Are these nuts suitable for a Buy American or ARRA-funded project?
The JNYN163M is flagged compliant for both Buy American and ARRA, which is what an institutional or government procurement file needs on a fastener line item. Country of origin is listed as multiple.
3) How much thread engagement do I need, and how tall is the nut?
Head height runs 0.298 to 0.328 inch, which is the overall nut height including the nylon collar. Allow at least that much bolt projecting past your assembly, plus a couple of threads into the nylon ring, or the insert won't grip and you lose the locking action.
4) Will a nylon insert locknut hold up in a hot location like a light fixture housing or near a motor?
The nylon insert in the JNYN163M is what creates the prevailing torque, and nylon has a practical temperature ceiling, so for high heat service a metal locking element (all-metal prevailing torque nut) or a jam nut with thread locker is the better call. For normal panel, enclosure, strut and raceway work at ambient temperature, this nylon insert nut is the usual choice.
5) How are the Metallics JNYN163M locknuts packaged, and what is the smallest quantity I can order?
They come in a jar of 1000, and 1000 pieces is the order minimum, so it is sold by the full jar rather than loose by the piece. Metallics also notes other sizes and quantities are available by request if 1/4-20 in a thousand-count jar isn't what your job needs.
6) What material and finish are these locknuts, and will they rust in a damp mechanical room?
Steel with a zinc finish, silver in appearance. Zinc plating handles indoor and damp-but-sheltered conditions fine, but it is not a stainless nut, so for direct weather exposure, wash-down areas or coastal outdoor runs specify stainless instead.
7) Can these lock nuts be reused after I take the assembly apart?
Nylon insert nuts lock by the bolt cutting its own path through the nylon collar, so grip drops off each time you remove and refit one. Because these ship 1000 to a jar, it's cheaper and safer to fit a fresh nut on reassembly than to reuse one that's been off twice.
8) How heavy is a jar of 1000 of these 1/4-20 locknuts for shipping and shelf planning?
A full jar weighs 7.66 lbs, and the container measures 7.25 inches by 4.5 by 4.5. Light enough to keep several sizes on a van shelf or in a parts crib bin.
How fast can I get the Metallics JNYN163M 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 JNYN163M come with a warranty?
Absolutely. The Metallics JNYN163M 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 JNYN163M?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
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