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Nut M3 x 0.5 Din 985 A2 Nylon Inse (Jar 2500)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Nuts
Metallics JMNYN305SS – Frequently Asked Questions
1) What thread size is the Metallics JMNYN305SS nylon insert lock nut?
It's an M3 x 0.5 metric thread, meaning a 3 mm nominal diameter with a 0.5 mm pitch. That's the standard coarse pitch for M3, so it mates with ordinary M3 machine screws and bolts. Nothing smaller or larger will thread in.
2) Is the JMNYN305SS nut stainless steel, and will it hold up outdoors or in damp enclosures?
The nut is A2 stainless, the common 304-grade austenitic stainless used for fasteners. A2 resists rust in damp indoor and general outdoor exposure, which is why it gets specified for exterior enclosures, panel work and wet locations. For salt spray or chlorinated environments, A4 (316) stainless is the step up.
3) Can a nylon insert lock nut like this be reused after it's taken off?
The nylon collar in a DIN 985 nut deforms around the bolt threads the first time it's run on, so each removal reduces its grip. Trades generally treat them as single-use where the joint matters and replace them on reassembly, which is one reason these come by the jar rather than in small counts.
4) How many M3 nylon lock nuts come in the Metallics JMNYN305SS package?
2,500 nuts, supplied in a jar. That quantity suits a shop bench or service van where M3 hardware gets consumed steadily, panel builds, control enclosures, device mounting. If you only need a handful for one job, this is a bulk pack rather than a small count.
5) Will a nylon insert lock nut work where the joint gets hot?
The locking element is nylon, so it is limited by the plastic rather than the stainless body. Keep these out of high-heat locations such as ballast compartments or near heating elements; an all-metal prevailing torque nut or a jam nut is the right call there. For normal panel, enclosure and device-mounting temperatures, the nylon insert is fine.
6) Should I pair stainless lock nuts with plated steel screws?
Mixing an A2 stainless nut with a zinc-plated steel screw works mechanically but sets up a galvanic pair, and in wet locations the plating sacrifices first. For outdoor or damp installs, run stainless screws with these stainless nuts. Indoors and dry, the mix is routine.
7) What is the Metallics part number for the M3 A2 stainless nylon insert lock nut?
Metallics JMNYN305SS. That number covers the M3 x 0.5 DIN 985 A2 stainless nylon insert nut in the 2,500-piece jar, so it is the number to quote for a reorder or a cross-reference.
How fast can I get the Metallics JMNYN305SS delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 JMNYN305SS come with a warranty?
Absolutely. The Metallics JMNYN305SS is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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