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Nut 4-40 Nylon Hex Nut - USA Made (Jar 100)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Nuts
Metallics JNN157D – Frequently Asked Questions
1) What thread size does the Metallics JNN157D nylon hex nut take?
The JNN157D is a 4-40 hex nut, so it threads onto a #4 machine screw with 40 threads per inch. That is the common small screw size for device plates, terminal boards, and light-duty panel mounting. It will not start on a 6-32 or 8-32 screw.
2) Why use a nylon nut instead of a steel one on electrical work?
Nylon is non-conductive and non-corroding, so a 4-40 nylon hex nut is what you reach for when the fastener sits near a live terminal or a circuit board and you do not want a metal path. It also will not gall or rust in damp enclosures. Trade-off: nylon has far less clamp strength than steel, so keep it to light-duty mounting and do not torque it like a metal nut.
3) Are Metallics JNN157D nylon nuts made in the USA?
Yes, the 4-40 nylon hex nut is USA made, which is what lets it clear domestic-content requirements on government and institutional jobs that specify American-made fasteners.
How fast can I get the Metallics JNN157D 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 JNN157D come with a warranty?
Absolutely. The Metallics JNN157D 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 JNN157D?
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 JNN157D 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.