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Nuts 1/2-13 Spring Nut St-zn Ma (Box 100)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- Y
- Buy American Compliant:
- Yes
- Country Of Origin:
- United States
- Division:
- Electrical H1
- Fastener Height:
- 0.463 - 0.481
- Fastener Length:
- 1.316 - 1.380
- Fastener Width:
- 0.725 - 0.770
- Hardness:
- Rockwell HR15N 78-90
- Language Code:
- EN
- Material Standard:
- C1015 - C1020
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Box
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 13
- Thread Standard:
- ANSI/ASME B1.1
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Spring Nut
- Type2:
- Spring Nut
- Series:
- MSNR
- Product Finish:
- Zinc
- Product Details:
- Spring Nut
- Product Material:
- Steel
Metallics MSNR1213D – Frequently Asked Questions
1) What thread size and pitch does the Metallics MSNR1213D spring nut take?
It takes 1/2-13 bolts, meaning a 1/2 inch diameter with 13 threads per inch, cut to the ANSI/ASME B1.1 thread standard. That is the standard UNC coarse pitch for 1/2 inch, so any off-the-shelf 1/2-13 hex head, carriage bolt, or threaded rod engages it.
2) Is the Metallics MSNR1213D spring nut acceptable on a Buy American or ARRA funded project?
Yes. The MSNR1213D is made in the United States and is flagged both Buy American compliant and ARRA compliant, which is what a public agency or school district procurement file needs on a strut hardware line item.
3) Does a spring nut need a separate washer or clip to stay in the channel before I tighten the bolt?
No. The spring is what sets this apart from a plain channel nut: it presses the nut up against the channel lips and holds its position while you line up the bracket and start the bolt, so you can work one-handed overhead. A plain channel nut without the spring drops out of the strut the moment you let go.
4) What material and finish are these 1/2-13 spring nuts, and are they OK for damp indoor areas?
Steel in the C1015 to C1020 range with a zinc finish. Zinc plated steel is a dry-location and general indoor finish, fine for mechanical rooms, ceiling spaces, and interior conduit runs. For exterior, wash-down, or corrosive environments, specify a stainless or hot-dip galvanized channel nut instead.
5) How many 1/2-13 spring nuts come in a box, and can I buy fewer than a full box?
They ship as a box of 100 pieces, and 100 count is the order minimum, so the box is the buying unit rather than the individual nut. Metallics does make other sizes and quantities in the MSNR series available by request.
6) I have a mix of 3/8-16 and 1/2-13 hardware on the job. Can I use one spring nut for both?
No. The MSNR1213D is threaded 1/2-13 only; a 3/8 bolt will not engage it and forcing it strips the thread. Order the matching MSNR size for each bolt diameter you are running. Other sizes in the series are available by request.
7) Are the teeth on these channel nuts hardened enough to bite into the strut lips?
The MSNR1213D is specified at Rockwell HR15N 78 to 90. That surface hardness is what lets the grooved face key into the inturned lips of the channel instead of deforming under torque, which is how the connection resists slipping along the run.
How fast can I get the Metallics MSNR1213D 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 MSNR1213D come with a warranty?
Absolutely. The Metallics MSNR1213D 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 MSNR1213D?
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 MSNR1213D from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.