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Nuts 5/16-18 Hx Nut St-zn (Jar 1000)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Division:
- Electrical H1
- Fastener Head Width:
- 0.489 - 0.500 in.
- Fastener Height:
- 0.258 - 0.273
- Fastener Width:
- 0.258 - 0.273
- Grade:
- 2
- Hardness:
- Rockwell B68-C32
- Language Code:
- EN
- 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:
- 10.9 lbs
- Product Width:
- 4.5 in
- Remarks:
- The catalog UPC differ from the tarnsaction daat spreadsheet UPC
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 18
- Thread Standard:
- ASME B18.2.2
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Hexagonal Nut
- Type2:
- Hexagonal Nut
- Series:
- JN
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Nut
- Product Material:
- Steel
Metallics JN164M – Frequently Asked Questions
1) What thread size are the Metallics JN164M hex nuts, and will they fit standard 5/16 inch threaded rod?
The JN164M is a 5/16-18 hex nut, so it runs onto 5/16 inch rod or bolts cut with 18 threads per inch, the common coarse pitch for that diameter. Threads are made to ASME B18.2.2. If your rod is 3/8-16 or 1/4-20, this is the wrong nut.
2) What grade are these hex nuts and are they strong enough for strut and hanger work?
These are Grade 2 steel nuts with a hardness of Rockwell B68 to C32, which is the standard commercial grade used for general electrical support work, strut, hangers and threaded rod drops. For high strength structural joints calling out Grade 5 or Grade 8, specify a higher grade nut to match the bolt.
3) Do Metallics JN164M hex nuts meet Buy American or ARRA requirements on a federal job?
The JN164M carries a C designation for both Buy American and ARRA compliance. Country of origin is China, so if your contract requires domestic melt and manufacture rather than ARRA-style compliance, confirm which clause your spec is written to before you submit.
4) What wrench or socket size do I need for these 5/16-18 hex nuts?
Across the flats the nut measures 0.489 to 0.500 inch, so a 1/2 inch wrench or socket is the fit. Nut thickness runs 0.258 to 0.273 inch.
5) Are these zinc plated steel nuts okay for outdoor or damp electrical work?
The JN164M is zinc plated steel. Zinc plating handles indoor and normally dry commercial environments and gives mild corrosion protection, but for wet, exterior, coastal, or corrosive locations you want stainless or hot dip galvanized hardware instead.
6) How many nuts come in a jar of Metallics JN164M, and can I buy a smaller quantity?
JN164M ships as a jar of 1,000 nuts, and 1,000 is the order minimum. Other sizes and quantities are available by request.
7) Will these plain hex nuts stay tight on a vibrating load, or do I need a locknut?
The JN164M is a plain finished hex nut with no nylon insert or distorted thread, so it has no built in prevailing torque. On equipment that vibrates, pair it with a lock washer, double nut it, or move to a nylon insert locknut in the same 5/16-18 thread.
8) How much does a jar of 1,000 of these 5/16-18 nuts weigh, and how big is the jar?
A full jar runs 10.9 lbs, with the container measuring 7.25 in by 4.5 in by 4.5 in. Worth knowing if you are stocking a gang box or a van shelf rather than a warehouse bin.
How fast can I get the Metallics JN164M 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 JN164M come with a warranty?
Absolutely. The Metallics JN164M 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 JN164M?
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 JN164M from ZenSupply?
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and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.