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Nuts 1/4-20 Hx Ny-Ins Locknut SS (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- N
- Buy American Compliant:
- No
- Country Of Origin:
- MUL
- 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
- Language Code:
- EN
- Material Standard:
- ASTM F594
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Remarks:
- The catalog UPC differ from the tarnsaction daat spreadsheet UPC
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 20
- Thread Standard:
- ANSI/ASME B1.1
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Hexagonal Nylon Insert Lock Nut
- Type2:
- Hexagonal Nylon Insert Lock Nut
- Series:
- JNYN
- Product Details:
- Hexagonal Nylon Insert Lock Nut
- Product Material:
- 316 Stainless Steel
Metallics JNYN1631SS – Frequently Asked Questions
1) What thread size and pitch is the Metallics JNYN1631SS nylon insert lock nut?
It's a 1/4-20 nut, so 20 threads per inch on a 1/4 inch coarse thread, cut to ANSI/ASME B1.1. It mates with any standard 1/4-20 UNC bolt, threaded rod, or stud.
2) Is the JNYN1631SS locknut 304 or 316 stainless?
316 stainless steel, conforming to ASTM F594 for stainless fasteners. The 316 alloy carries molybdenum, which is why it's the grade specified for coastal, marine, wastewater, and chemically aggressive environments where 304 pits. If your spec only calls for 304, a 316 nut still satisfies it.
3) Does this Metallics locknut meet Buy American or ARRA requirements for a public project?
No. The JNYN1631SS is not Buy American compliant and is not ARRA compliant, and country of origin is listed as multiple. If your contract carries a domestic sourcing clause, this nut will not satisfy it.
4) Will a nylon insert locknut hold on a vibrating assembly like a rooftop unit or conduit rack?
That's exactly what the nylon insert is for. The collar deforms around the bolt threads and resists back-off from vibration without needing a lock washer or thread locker. One limitation worth knowing: nylon insert nuts are prevailing torque fasteners intended for single use, so if you break one loose during service, replace it rather than reusing it.
5) What dimensional standard does this hex nylon insert locknut conform to?
ASME B18.16.6, the standard governing prevailing torque lock nut dimensions. Pair that with the ASTM F594 material spec and the B1.1 thread spec and you've got what most submittals ask for on a stainless locknut line item.
6) Can I use a stainless nylon insert locknut on a hot application like near a flue or a high-temperature fixture?
Think twice. The 316 stainless body handles heat fine, but the locking element is nylon, and nylon insert nuts lose their grip once service temperature climbs. For hot locations, use an all-metal prevailing torque lock nut or a jam nut arrangement instead of a nylon insert type.
7) How does the Metallics JNYN1631SS ship, and what is the minimum order?
Packed 100 count in a jar, and the jar of 100 is the minimum order quantity. The jar format is handy on a service van or in an MRO crib where loose nuts in a bag get lost.
8) Can I get this Metallics JNYN locknut in other sizes besides 1/4-20?
Yes, other sizes and quantities in the JNYN stainless nylon insert series are available by request. The JNYN1631SS is the 1/4-20 jar of 100.
How fast can I get the Metallics JNYN1631SS 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 JNYN1631SS come with a warranty?
Absolutely. The Metallics JNYN1631SS 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 JNYN1631SS?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics JNYN1631SS from ZenSupply?
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