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Nuts 3/8-16 Spring Nut St-zn (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
- Fastener Height:
- 0.353 - 0.370
- 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 Family:
- Electrical Supplies
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 16
- 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 MSNR3816D – Frequently Asked Questions
1) What thread size is the Metallics MSNR3816D spring nut, and will it take standard 3/8-16 threaded rod or bolts?
It's a 3/8-16 spring nut, 16 threads per inch, cut to ANSI/ASME B1.1. That's the standard UNC coarse thread for 3/8 inch, so any off-the-shelf 3/8-16 bolt, all-thread rod, or hanger rod threads straight into it.
2) Is the Metallics MSNR3816D spring nut Buy American and ARRA compliant for a federal or public job?
Yes on both. The MSNR3816D is flagged Buy American compliant and ARRA compliant, with country of origin United States. That covers the domestic-sourcing line item on federally funded electrical work.
3) Does the Metallics 3/8-16 spring nut come with the spring and do I still need to buy bolts?
The spring is part of the nut, that's what holds it in position in the channel while you set the bolt. Bolts are not included. You supply your own 3/8-16 hardware, and if you're hanging conduit or trapeze you'll also need the channel and any washers or fittings separately.
4) How many spring nuts come in a box, and can I buy just a few?
They ship as a box of 100, and 100 count is the order minimum. Smaller quantities aren't broken out of the box. Metallics does make the MSNR spring nut in other sizes and quantities on request.
5) What are these spring nuts made of, and will the zinc finish hold up in a damp mechanical room?
Steel body in C1015 to C1020 low-carbon grade with a zinc finish. Zinc plating is a general indoor and protected-environment coating, fine for mechanical rooms, ceiling spaces, and interior conduit runs. For exterior, wash-down, or corrosive service you'd want a hot-dip galvanized or stainless channel nut instead.
6) How hard is the Metallics spring nut, and will the serrations bite into the channel lips?
Case hardness runs Rockwell HR15N 78-90. That surface hardening is what lets the grooved face dig into the strut lips and resist the nut spinning or sliding under load once the bolt is torqued down.
7) What is a spring nut used for on an electrical job?
A spring nut drops into a strut channel and the spring holds it at the point you want it, so you can set it one-handed overhead and then run the bolt in without the nut falling down the channel. Standard use is conduit supports, trapeze hangers, equipment mounting, and cable tray runs. The MSNR3816D is the 3/8-16 version.
How fast can I get the Metallics MSNR3816D 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 MSNR3816D come with a warranty?
Absolutely. The Metallics MSNR3816D 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 MSNR3816D?
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 MSNR3816D from ZenSupply?
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and
rewards on
every order.
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