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Nuts 5/16-24 Hx Ny-Ins Locknut SS (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Features
- Made to American Standard Dimensions
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Country Of Origin:
- MUL
- Dimensional Standard:
- ASME B18.16.6
- Division:
- Electrical H1
- Fastener Head Height:
- 0.329 - 0.359 in.
- Fastener Head Width:
- 0.489 - 0.502 in.
- Fastener Height:
- 0.25
- Field Application:
- Width is Wrench Size
- Hardness:
- Rockwell B95-C35
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Nylon_Insrt_Lck_Nut_18-8_SS_316_SS.pdf
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 2.15 in
- Product Length:
- 3 in
- Product Weight:
- 1.14 lbs
- Product Width:
- 3 in
- Sub Division:
- Electrical-E H2
- Thread Direction:
- Right Hand
- Thread Per Inch:
- 24
- Thread Standard:
- ANSI/ASME B1.1
- Thread Type:
- UNF
- 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:
- 18-8 Stainless Steel
Metallics JNYN174SS – Frequently Asked Questions
1) Will a 5/16-24 nylon insert locknut thread onto a coarse 5/16-18 bolt?
No. The Metallics JNYN174SS is a 5/16-24 UNF nut, 24 threads per inch, right hand, cut to ANSI/ASME B1.1. A 5/16-18 coarse bolt will not take it. Fine thread rod and bolts only.
2) Are these locknuts stainless and will they hold up outdoors or in a damp mechanical room?
They're 18-8 stainless steel, the standard austenitic grade for general outdoor and washdown use. Hardness is Rockwell B95-C35. For salt spray or coastal exposure, 316 stainless is the step up.
3) Can these nuts be used on a Buy American or ARRA-funded job?
Yes. The JNYN174SS is flagged both Buy American compliant and ARRA compliant. Country of origin is listed as multiple.
4) Do nylon insert locknuts need a lock washer, and can I reuse them?
No washer is needed. The nylon collar inside the Metallics JNYN hex nut deforms around the bolt threads and provides the prevailing torque, so it locks without a split washer or thread locker. Nylon inserts are generally treated as limited-reuse: once the collar has been cut by the threads its grip drops off, so plan on fresh nuts when you break a joint apart.
5) How many 5/16-24 locknuts come in a jar and what's the minimum I can order?
They ship 100 to the jar, and 100 count is the order minimum, so one jar is the smallest buy. The packed jar weighs 1.14 lbs.
6) Do these locknuts meet a dimensional standard so they match what's already on my equipment?
They're built to ASME B18.16.6, the standard covering nylon insert hex lock nuts, and to American Standard dimensions. That means the hex and height match any other B18.16.6 5/16-24 nylon insert nut on the assembly.
7) Is a nylon insert locknut the right choice on a vibrating load like a fan or rooftop unit?
Yes for ordinary vibration service. The nylon collar keeps the nut from backing off under vibration, which is why these get used on strut, fan mounts, and equipment anchors. The limit is heat: nylon inserts are not for high temperature locations, where an all-metal prevailing torque nut or jam nut is the right call.
How fast can I get the Metallics JNYN174SS 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 JNYN174SS come with a warranty?
Absolutely. The Metallics JNYN174SS 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 JNYN174SS?
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
Why buy the Metallics JNYN174SS from ZenSupply?
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and
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