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Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Nuts
Metallics JNCHTL38 – Frequently Asked Questions
1) What thread size is the Metallics JNCHTL38 locknut?
It's a 3/8-16 thread, so it mates with 3/8 inch coarse-thread rod, bolts, or hanger rod cut to 16 threads per inch. Pair it with 3/8-16 threaded rod used for conduit trapeze hangers, strut, and box supports. If your rod is 3/8-24 fine thread, this nut will not run on it.
2) Can I use the Metallics JNCHTL38 locknut on threaded rod for conduit and strut hangers?
Yes, as long as the rod is 3/8-16. It's an electrical fastener, catalogued with Metallics' electrical nuts, and 3/8-16 rod is the common size for conduit trapeze hangers, strut fittings, and box supports. The deformed top grips the thread so the nut resists loosening under vibration without needing a lock washer.
3) Is the Metallics JNCHTL38 a prevailing-torque locknut or does it use a nylon insert?
It's a top locknut, meaning the top of the hex is deformed to grip the thread mechanically rather than relying on a nylon insert. That makes it reusable within reason and suitable where a nylon ring would be a problem, such as near heat. It's steel with a yellow zinc finish.
4) Will a yellow zinc steel locknut hold up outdoors or in a damp mechanical room?
Yellow zinc plating on steel is a mild corrosion coating meant for dry or sheltered interior work, such as conduit hangers in a mechanical room or above a ceiling. For exterior, wet, or corrosive locations, specify a hot dip galvanized or stainless 3/8-16 locknut instead.
5) What is the Metallics part number I should order for a 3/8-16 hex top locknut by the jar?
Order Metallics JNCHTL38. That number covers the 3/8-16 steel yellow zinc hex top locknut in the 100 count jar, and it's the only configuration that number is built in.
6) How many 3/8-16 locknuts come in a jar of Metallics JNCHTL38?
Each jar holds 100 nuts. The jar pack is handy on a van or a job cart since it reseals, unlike a loose bag.
7) Do I need a flat washer with these locknuts?
A hex top locknut handles the anti-rotation job on its own, so no lock washer is needed. You'll still want a flat washer where the nut bears on strut, channel, sheet metal, or an oversized hole to spread the load. Washers are a separate order.
How fast can I get the Metallics JNCHTL38 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 JNCHTL38 come with a warranty?
Absolutely. The Metallics JNCHTL38 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 JNCHTL38?
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 JNCHTL38 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.