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Nut 1/2-13 Hvy Hx Nut 18-8 SS (Jar 50)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Nuts
Metallics JSNHH18 – Frequently Asked Questions
1) What thread size does the Metallics JSNHH18 heavy hex nut take?
The JSNHH18 is a 1/2-13 nut, so it threads onto 1/2 inch bolts, rods, or studs with UNC coarse thread (13 threads per inch). It will not run onto 1/2-20 fine thread hardware.
2) Is the Metallics JSNHH18 nut stainless, and will it hold up outdoors or in damp areas?
It is 18-8 stainless steel, the common 300-series austenitic grade used where plain or zinc-plated steel would rust. That makes it suitable for outdoor strut, damp mechanical rooms, and washdown areas. For salt spray or coastal exposure, 316 stainless is the step up.
3) Can I use the Metallics JSNHH18 nut on 1/2 inch threaded rod for hanging conduit and strut?
Yes. 1/2 inch all-thread rod is cut to 1/2-13 UNC, so this nut runs the full length of standard rod used for trapeze hangers, strut, and conduit supports. Because it is 18-8 stainless, pair it with stainless rod and washers where you want the whole assembly corrosion resistant; mixing stainless nuts onto plated rod leaves the rod as the weak point for rust.
4) What is the difference between a heavy hex nut and a standard hex nut for 1/2-13 threads?
A heavy hex nut like the JSNHH18 is thicker and has a larger across-flats dimension than a finished hex nut of the same 1/2-13 thread. You get more bearing area under the nut and more thread engagement, which is why they are specified on structural connections, hanger rod, and anything carrying real load. It does mean a bigger wrench than you would use on a standard 1/2 inch hex nut.
5) How many nuts come in the Metallics JSNHH18 package?
Fifty nuts, supplied in a jar rather than a loose bag or box. The jar keeps them contained on a cart or in a gang box, which is the point for an electrician pulling a handful at a time off strut and rod work.
6) What exact part number do I order for a 1/2-13 18-8 stainless heavy hex nut from Metallics?
Metallics part number JSNHH18. That single MPN covers the 1/2-13 heavy hex nut in 18-8 stainless, jar of 50, and it is the number to quote so you do not end up with the plated-steel or finished-hex equivalent.
7) Will stainless 1/2-13 nuts gall when I tighten them?
Stainless on stainless can gall, and 18-8 is prone to it when run on fast or dry. Thread the JSNHH18 on by hand, keep speed down with a driver, and use an anti-seize on long rod runs or anything you expect to take apart later. Clean the threads first if the rod has been site-cut, since a burred end is what usually starts the galling.
How fast can I get the Metallics JSNHH18 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 JSNHH18 come with a warranty?
Absolutely. The Metallics JSNHH18 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 JSNHH18?
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product
selection,
installation tips, and troubleshooting. Contact Us
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