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Nuts 3/8-16 Hvy Hx Ny-Ins Locknut 1 SS (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Country Of Origin:
- China
- Dimensional Standard:
- ASME B18.16.6
- Division:
- Electrical H1
- Fastener Head Height:
- 0.438 - 0.468 in.
- Fastener Head Width:
- 0.551 - 0.564 in.
- Fastener Height:
- 0.335
- 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_Heavy_Hex_18-8_SS.pdf
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 3.6 in
- Product Length:
- 3 in
- Product Weight:
- 1.92 lbs
- Product Width:
- 3 in
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 16
- 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:
- 18-8 Stainless Steel
Metallics JNYN165SSHH – Frequently Asked Questions
1) Will the Metallics JNYN165SSHH nylon insert locknut thread onto a 3/8-16 bolt or threaded rod?
Yes. The JNYN165SSHH is a 3/8-16 nylon insert locknut, cut 16 threads per inch to ANSI/ASME B1.1, so it runs onto standard 3/8-16 UNC rod, bolts, or all-thread. It will not fit 3/8-24 fine thread.
2) Are these locknuts stainless and will they hold up outdoors or in a wet location?
They are 18-8 stainless steel, the austenitic 300-series grade used for general corrosion resistance, so they suit outdoor runs, damp mechanical rooms, and washdown areas where plated steel nuts would rust. Hardness is Rockwell B95 to C35. The locking element is nylon, not metal, so keep them off high-heat work.
3) What wrench size do I need for these heavy hex locknuts?
Across the flats the nut measures 0.551 to 0.564 inch, which is the heavy hex width for a 3/8-16 nut and larger than a standard 3/8 hex nut. A 9/16 inch wrench or socket fits. Overall nut height runs 0.438 to 0.468 inch, so allow for that when you have limited clearance behind a strut or panel.
4) Is this a heavy hex nut rather than a standard hex nylon locknut?
Heavy hex. The JNYN165SSHH is built to ASME B18.16.6, the dimensional standard for prevailing-torque lock nuts, with the wider heavy hex body at 0.551 to 0.564 inch across the flats. If your drawing or your existing hardware calls for a standard-pattern 3/8 nylon insert nut, the heavier flats may not clear a tight channel or nested fitting.
5) How many 3/8-16 stainless nylon locknuts come in a jar?
They ship 100 to a jar, and 100 count is the order minimum. The jar weighs 1.92 lbs and measures 3 x 3 x 3.6 inches, so it drops into a gang box or a van bin without repacking.
6) Can I reuse a nylon insert locknut after taking it apart?
A nylon insert locknut locks by the nylon ring deforming around the bolt thread, so each removal cuts into the holding torque. For an electrical hanger, strut, or equipment mount you are servicing regularly, plan on fresh nuts, which is why these come 100 to a jar. The 18-8 stainless body itself is unaffected by reuse.
7) Can I get this nylon insert locknut in other sizes or pack quantities?
The JNYN series covers other sizes and pack quantities by request; the JNYN165SSHH itself is the 3/8-16 heavy hex 18-8 stainless version in a 100-count jar.
How fast can I get the Metallics JNYN165SSHH delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 JNYN165SSHH come with a warranty?
Absolutely. The Metallics JNYN165SSHH 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 JNYN165SSHH?
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