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Nuts 5/16-24 Hx Nut FT St-zn (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Features
- The most versatile and widely used nut design. Grade-2 nuts are for use with any low carbon bolt or screw that is not heat treated, with a specified minimum tensile strength of 74,000 psi or less
- Made to American Standard Dimensions
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:
- 0.557 - 0.577
- Field Application:
- Width is Wrench Size
- Grade:
- 2
- Hardness:
- Rockwell B68-C32
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Nut_Domestic_Gr_2_Gr_5_Gr_8_Gal_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:
- 1.09 lbs
- Product Width:
- 3 in
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 24
- Thread Type:
- UNF
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Hexagonal Nut
- Type2:
- Hexagonal Nut
- Series:
- JNF
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Nut
- Product Material:
- Steel
Metallics JNF164 – Frequently Asked Questions
1) Will a 5/16-24 hex nut thread onto a 5/16-18 bolt?
No. The Metallics JNF164 is a fine thread nut, 24 threads per inch (UNF), so it will not run onto a 5/16-18 coarse thread bolt. Match it to 5/16-24 UNF studs and screws only. If your fastener is coarse, you need a 5/16-18 UNC nut instead.
2) Is a Grade 2 zinc hex nut strong enough for the bolts I'm using?
Grade 2 nuts suit any low carbon bolt or screw that is not heat treated, with a specified minimum tensile strength of 74,000 psi or less. If you are torquing a Grade 5 or Grade 8 bolt to spec, step up to a matching higher grade nut rather than using this one. Hardness on the JNF164 runs Rockwell B68-C32.
3) What wrench or socket size do I need for the Metallics JNF164 nut?
1/2 inch. The across-flats dimension is 0.489 to 0.500 in., and on this nut the width across flats is the wrench size. The corner-to-corner width runs 0.557 to 0.577 in., which is what matters if you are working in a tight pocket.
4) Can I use these zinc plated nuts outdoors or in a damp location?
The JNF164 is steel with a zinc finish, which is a mild corrosion barrier meant for dry indoor and sheltered use. For wet exterior runs, washdown areas or anywhere near chemicals, go to a hot dip galvanized or stainless hex nut instead. Zinc plating will bloom and rust in standing moisture.
5) Do these nuts meet Buy American or ARRA requirements for a government job?
The JNF164 is flagged compliant for both Buy American and ARRA, with country of origin listed as multiple. For a federally funded spec that demands documented domestic origin on each lot, ask for the mill paperwork on the specific jar you receive.
6) How are these 5/16-24 hex nuts packaged, and is there a minimum order?
They ship in a jar of 100 pieces, and 100 count is the order minimum, so it is a one-jar buy at a time. Total jar weight is 1.09 lbs. Handy for a service van or a shop drawer rather than a bulk box on a production line.
7) Are these nuts dimensionally standard so they'll match the washers and sockets I already stock?
Yes. These hex nuts are made to American Standard dimensions, so a standard 5/16 flat washer and a 1/2 inch socket drop right on. Across flats measures 0.489 to 0.500 in.
8) Is this a full thread nut or a jam nut?
It is a full thread 5/16-24 hex nut, not a thin jam nut, with a height of 0.258 to 0.273 inches. If you are locking two nuts against each other on a stud, this is the primary nut and you would add a thinner jam nut above it.
How fast can I get the Metallics JNF164 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 JNF164 come with a warranty?
Absolutely. The Metallics JNF164 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 JNF164?
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 JNF164 from ZenSupply?
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and
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every order.
Our team is always ready to help you choose the right product for your project.