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Nuts 5/16-18 Hx Nut Pln-St (Jar 100)
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:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 2.15 in
- Product Length:
- 3 in
- Product Weight:
- 1.09 lbs
- Product Width:
- 3 in
- 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:
- Plain
- Product Details:
- Hexagonal Nut
- Product Material:
- Steel
Metallics JN164PL – Frequently Asked Questions
1) What thread size is the Metallics JN164PL hex nut, and will it fit a standard 5/16 inch UNC bolt?
The JN164PL is a 5/16-18 hex nut, so it threads onto any 5/16 inch coarse-thread (UNC) bolt, rod, or stud. The 18 threads per inch is the standard coarse pitch for 5/16 inch fasteners, which is what you'll find on 5/16 all-thread rod used for strut, trapeze, and fixture hanging.
2) Are these plain steel nuts okay for outdoor or damp electrical work?
No. The JN164PL is plain finish steel with no plating or coating, so it will rust in wet, outdoor, or washdown locations. Keep these for dry interior work, indoor strut and fixture hanging, panel and enclosure assembly. For exterior runs or damp areas, order a zinc-plated or stainless 5/16-18 hex nut instead.
3) What grade are the Metallics JN164PL hex nuts, and is that strong enough for hanging conduit and fixtures?
These are Grade 2 steel nuts with a hardness of Rockwell B68-C32. Grade 2 is the general-purpose carbon steel grade and it's the normal match for Grade 2 bolts and standard 5/16 threaded rod on conduit hangers, strut, and light fixture support. If your drawing calls out Grade 5 or Grade 8 bolting, pair those with a matching higher-grade nut rather than these.
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 right tool. Nut height runs 0.258 to 0.273 inch, which is the standard finished hex pattern, so a standard-depth 1/2 inch socket reaches it fine.
5) How do the Metallics JN164PL nuts come packaged, and what's the smallest quantity I can buy?
They ship in a jar of 100 pieces, and 100 count is the order minimum, so one jar is the smallest buy. The jar runs 1.09 lbs filled. The jar format is useful on a service truck or MRO shelf since you can pour out a handful without hunting through a loose bin.
6) Do these hex nuts meet a dimensional standard so they'll interchange with what's already on the job?
Dimensions follow ASME B18.2.2, the standard for hex nuts, so the 1/2 inch across-flats and 0.258 to 0.273 inch thickness match any other B18.2.2 5/16-18 finished hex nut. That means they drop in alongside nuts already installed from another supplier without changing wrench sizes or clearances.
7) Can I use the Metallics JN164PL nuts on a federally funded or Buy American job?
The JN164PL is flagged compliant for both ARRA and Buy American, though the nuts are manufactured in China. On a project with a strict domestic-content requirement, hand those two flags plus the country of origin to your specifier before you submit, because the two readings don't always satisfy the same contract language.
8) I need 5/16-18 nuts in a zinc finish or a bigger quantity than 100. Can Metallics supply that?
Other sizes and quantities in the Metallics JN hex nut series are available by request, so if you need a different thread diameter or a larger pack than the 100-count jar, ask for it rather than buying multiple jars blind.
How fast can I get the Metallics JN164PL 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 JN164PL come with a warranty?
Absolutely. The Metallics JN164PL 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 JN164PL?
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
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