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Nut M8 x 1.25 Hx Ny-Ins Locknut St (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 JMNYN08 – Frequently Asked Questions
1) What thread size does the Metallics JMNYN08 nylon insert locknut take?
The JMNYN08 is an M8 x 1.25 hex nylon-insert locknut, so it threads onto M8 coarse-pitch bolts, studs, or rod. Metric only, it won't run onto an imperial 5/16-18 or 3/8-16 thread.
2) How many nuts come in a jar of Metallics JMNYN08?
One hundred locknuts per jar. Metallics packs the M8 x 1.25 nylon-insert locknut in a jar rather than a bag, which is what you want on a cart or bench where loose fasteners get spilled.
3) Will a nylon insert locknut hold on a vibrating electrical assembly?
That is what the nylon insert is for. The collar in the top of the JMNYN08 deforms against the bolt thread and resists back-off from vibration, which is why it gets used on strut, enclosures, motor mounts, and equipment bases rather than a plain hex nut plus a split washer.
4) Is this M8 locknut suitable for high-heat locations?
No. The JMNYN08 relies on a nylon insert, and nylon is the limiting part in heat, so keep it off hot equipment, luminaire housings that run hot, or anywhere near flame work. For elevated temperature use an all-metal prevailing-torque or jam-nut arrangement in the same M8 x 1.25 thread.
5) Do I need a washer with these M8 nylon insert locknuts?
No lock washer is needed, the nylon insert does that job. A flat washer is still worth adding on sheet metal, strut, or soft material to spread the bearing load, and the JMNYN08 ships as nuts only, no washers or bolts in the jar.
6) How much bolt thread has to stick through an M8 nylon insert locknut?
The bolt needs to pass fully through the nylon collar at the top of the nut, not just reach the steel threads. If the stud stops short of the insert the nut will spin free, so cut rod or pick bolt lengths so the end protrudes past the top face of the JMNYN08.
7) Can I reuse a nylon insert locknut after taking the assembly apart?
Treat the JMNYN08 as a limited-reuse nut. The nylon insert loses prevailing torque each time it is run on and off, so for anything that has to hold, install fresh nuts from the jar of 100 rather than reusing pulled ones.
8) What material are the Metallics JMNYN08 locknuts made of?
Steel body with a nylon locking insert. Bare steel is fine inside dry enclosures and indoor electrical rooms; for damp or exterior work, specify a plated or stainless M8 locknut instead.
How fast can I get the Metallics JMNYN08 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 JMNYN08 come with a warranty?
Absolutely. The Metallics JMNYN08 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 JMNYN08?
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 JMNYN08 from ZenSupply?
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and
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