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Nuts 1/2-13 Hvy Hx Nut SS (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Features
- Designed for use with stainless steel bolts and screws with a specified minimum tensile strength equal to or less than the specified proof stress of the mating nut. Both type of stainless are corrosion resistant, with 316 stainless having greater such resistance as well as superior strength at raised temperatures.
- Six-sided internally threaded fastener whose thickness is 0.875 D is the nominal nut size and 1.5 D is their width across the flats, made from austenitic alloys.
Manufacturer Resources
Product Specs
- Arra Compliant:
- N
- Buy American Compliant:
- No
- Division:
- Electrical H1
- Fastener Head Height:
- 31/64 in.
- Fastener Head Width:
- 0.850 - 0.875 in.
- Fastener Height:
- 0.464 - 0.504
- Fastener Width:
- 0.969 - 1.010
- Hardness:
- Rockwell B95-C32
- Language Code:
- EN
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 13
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Heavy Hexagon Nut
- Type2:
- Heavy Hexagon Nut
- Series:
- JHHN
- Product Details:
- Heavy Hexagon Nut
- Product Material:
- 18-8 Stainless Steel
Metallics JHHN12SS – Frequently Asked Questions
1) What thread size is the Metallics JHHN12SS heavy hex nut?
It's a 1/2-13 nut, meaning a 1/2 inch nominal diameter with 13 threads per inch, which is the standard UNC coarse pitch for 1/2 inch fasteners. It will thread onto any 1/2-13 bolt, rod, or stud.
2) Is this stainless nut OK for outdoor or wet locations?
The JHHN12SS is 18-8 stainless steel, an austenitic grade that resists corrosion, so it holds up outdoors, in damp mechanical rooms, and in washdown areas far better than plain or zinc plated steel. If you're in a coastal or chloride heavy environment, or at elevated temperature, 316 stainless gives greater corrosion resistance and better strength when hot.
3) Can I use these stainless nuts with galvanized or grade 5 steel bolts?
Pair them with stainless steel bolts and screws whose specified minimum tensile strength is equal to or less than the proof stress of the nut. A high strength carbon steel bolt can out-strength an 18-8 nut and strip it, and mixing stainless with galvanized steel in a wet location invites galvanic corrosion. Match stainless to stainless.
4) Will the JHHN12SS heavy hex nut satisfy a Buy American or ARRA requirement on a public job?
No. The JHHN12SS is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. On federally funded or state work carrying domestic sourcing language, you'll need a domestically sourced nut instead.
5) How thick is the nut, and will it clear a short bolt stickout?
Nut height is 0.464 to 0.504 inches, so figure roughly a half inch of thread engagement needed above the joint. Heavy hex pattern means the thickness is about 0.875 times the nominal diameter, thicker than a standard hex nut of the same thread, so a bolt sized for a standard nut may run short on protruding thread.
6) How many nuts come in a jar of Metallics JHHN12SS?
They ship 100 to a jar, and 100 count is the order minimum. The jar packaging keeps them together on a service truck or in a parts crib rather than loose in a bag.
7) What is the hardness of these 18-8 stainless heavy hex nuts?
Rockwell B95 to C32. That's the usable range for austenitic stainless and it's why thread engagement and torque matter here: these are tough and corrosion resistant, but they are not a substitute for a hardened carbon steel nut on a high strength structural bolt.
8) I need a different size or a larger quantity of these stainless heavy hex nuts, can I get them?
The JHHN series covers other sizes and quantities by request beyond the 1/2-13 jar of 100. Tell us the thread size and the count you need for the job and we'll source it from the series.
How fast can I get the Metallics JHHN12SS 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 JHHN12SS come with a warranty?
Absolutely. The Metallics JHHN12SS 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 JHHN12SS?
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 JHHN12SS 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.