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Nuts 1/2-13 Hx Nut St-zn (Box 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 Height:
- 16-Jul in.
- Fastener Head Width:
- 0.736 - 0.750 in.
- Fastener Height:
- 0.427 - 0.448
- Fastener Width:
- 0.840 - 0.866
- Grade:
- 2
- Hardness:
- Rockwell B68-C32
- Language Code:
- EN
- Order Minimum Imperial:
- 1000
- Order Minimum Uom Imperial:
- TH
- Pack Type:
- Box
- Product Group:
- Fasteners
- Product Height:
- 6.13 in
- Product Length:
- 9 in
- Product Weight:
- 36.49 lbs
- Product Width:
- 9 in
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 13
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Hexagonal Nut
- Type2:
- Hexagonal Nut
- Series:
- N
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Nut
- Product Material:
- Steel
Metallics N1661M – Frequently Asked Questions
1) Will the Metallics N1661M hex nut thread onto 1/2-13 all-thread rod?
Yes. The N1661M is a 1/2-13 hex nut, 13 threads per inch, which is the standard UNC coarse pitch for 1/2 inch rod and bolts. It runs onto 1/2 inch all-thread, anchor rod, or hex bolts of the same coarse thread. It will not fit 1/2-20 fine thread.
2) Is a Grade 2 zinc plated steel nut strong enough for electrical hanger and strut work?
For overhead conduit hangers, strut, and general electrical mounting, yes. The N1661M is Grade 2 steel at Rockwell B68-C32 hardness, which is standard commercial-grade hardware. If your drawing calls for a Grade 5 or Grade 8 nut on a high-strength bolted connection, Grade 2 is not the right nut.
3) Do Metallics N1661M hex nuts meet Buy American requirements for a government or institutional job?
The N1661M is flagged both ARRA compliant and Buy American compliant in the manufacturer's data, which is what procurement on federally funded work usually asks for. Country of origin is listed as multiple, so if your specification requires a single named country of manufacture on the submittal, confirm the origin on the lot you receive.
4) What wrench or socket size fits the Metallics N1661M 1/2-13 hex nut?
Across the flats the nut measures 0.736 to 0.750 inch, so a 3/4 inch wrench or socket is the fit. Across the corners it runs 0.840 to 0.866 inch, which is the clearance you need in a tight strut channel or a boxed-in location.
5) Can zinc plated hex nuts like the Metallics N1661M be used outdoors or in a wet location?
The N1661M is zinc plated steel, which is a mild corrosion coating meant for dry interior and sheltered use. For exterior, roof, or damp/corrosive environments, step up to hot dip galvanized or stainless 1/2-13 nuts instead. Zinc on bare steel will rust where it is wet or exposed.
6) How many nuts come in a box of Metallics N1661M and can I buy a smaller quantity?
These ship as a box of 1,000 nuts, and 1,000 is the order minimum. Other sizes and quantities are available by request if a full box is more than the job needs.
7) Is a plain hex nut the right choice, or do I need a lock nut for vibrating conduit runs?
The N1661M is a plain finished hex nut with no locking feature. On a run subject to vibration, equipment mounting, or anything you cannot get back to easily, use a nylon insert lock nut or a second hex nut jammed against the first. For static strut and hanger assemblies where the nut is tightened against a washer and channel, the plain hex nut is standard.
8) How heavy is a box of 1,000 1/2-13 hex nuts?
A full box of the N1661M weighs 36.49 lbs and the carton measures 9 x 9 x 6.13 inches. Worth knowing if you are staging boxes on a cart or a scissor lift rather than pulling handfuls from a bin.
How fast can I get the Metallics N1661M 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 N1661M come with a warranty?
Absolutely. The Metallics N1661M 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 N1661M?
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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