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Nuts 1/4-20 Hx Ny-Ins Locknut St-zn (Box 5000)
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:
- Electrical, Plumbing, Heating, Air Conditioning Industries
- 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:
- 5000
- Order Minimum Uom Imperial:
- TH
- Pack Type:
- Box
- Product Group:
- Fasteners
- Product Height:
- 6.13 in
- Product Length:
- 9 in
- Product Weight:
- 42 lbs
- Product Width:
- 9 in
- Sub Division:
- Electrical-E H2
- 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:
- NYN
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Nylon Insert Lock Nut
- Product Material:
- Steel
Metallics NYN1635M – Frequently Asked Questions
1) Will the Metallics NYN1635M locknut thread onto standard 1/4-20 bolts and all-thread?
Yes. The NYN1635M is a 1/4-20 UNC nylon insert locknut cut to ANSI/ASME B1.1 threads, with 20 threads per inch, so it runs onto any standard 1/4-20 coarse thread bolt, rod, or strut hardware. UNC is the common coarse series used on 1/4 inch electrical and mechanical fasteners, so it will not mate with 1/4-28 fine thread.
2) Is this locknut built to a recognized dimensional standard for spec work?
It is made to ASME B18.16.6, the dimensional standard for prevailing torque and nylon insert lock nuts, with threads to ANSI/ASME B1.1. If a drawing calls for a B18.16.6 nylon insert hex locknut in 1/4-20, this meets the callout.
3) Can I use these on a Buy American or ARRA funded job?
Metallics lists the NYN1635M as both Buy American compliant and ARRA compliant. Country of origin is recorded as multiple, so confirm the origin marking on the carton you receive if your submittal requires a single named country.
4) How many nuts come in a box, and can I buy a smaller quantity?
The NYN1635M ships as a box of 5,000 pieces, and 5,000 is the order minimum, so it is a bulk pack rather than a shop-count bag. Metallics does offer other sizes and quantities by request if 5,000 is more than the job needs.
5) What wrench or socket size fits this 1/4-20 nylon insert locknut?
Across the flats the nut measures 0.430 to 0.439 inches, which is the 7/16 inch hex a standard 7/16 socket or open end wrench takes. Overall height is 0.298 to 0.328 inches including the nylon collar.
6) Why use a nylon insert locknut instead of a plain hex nut with a split lock washer on strut and hanger work?
The nylon collar in the NYN1635M grips the bolt thread and resists backing off from vibration, which is why these get specified for electrical, plumbing, heating, and air conditioning work where equipment runs and shakes a mounting loose. A plain nut with a split washer relies on tension alone. The tradeoff: the nylon is a one-shot deal in practice and these are not for high heat service, so for repeated disassembly a standard hex nut is the easier choice.
7) Are these zinc plated steel nuts okay for outdoor or damp locations?
The NYN1635M is steel with a zinc finish, which handles interior and protected exterior use but is not a stainless substitute. For wet locations, washdown areas, or coastal exposure, go to a stainless 1/4-20 nylon insert locknut instead.
8) What does the full box of 5,000 weigh and how big is the carton?
The box runs 42 lbs, measuring 9 x 9 x 6.13 inches. Worth knowing before you load a van or send it up to a mechanical room by hand, since that is a heavy 9 inch cube.
How fast can I get the Metallics NYN1635M 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 NYN1635M come with a warranty?
Absolutely. The Metallics NYN1635M 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 NYN1635M?
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