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Washers M8 Flat SS (Jar 100)
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Length:
- 3 in
- Product Height:
- 2.15 in
- Product Material:
- Stainless Steel
- Product Weight:
- 0.41 lbs
- Product Width:
- 3 in
Metallics JMSW8SS316 – Frequently Asked Questions
1) What size bolt do the Metallics JMSW8SS316 flat washers fit?
They're M8 flat washers, so they go on M8 metric bolts, screws, and threaded rod. They are not sized for imperial 5/16 inch hardware, which has a slightly smaller shank than M8, so a 5/16 bolt will have some play in the hole.
2) Are the Metallics M8 washers 316 stainless or 304?
Stainless steel, and the part number JMSW8SS316 identifies the 316 alloy. 316 is the marine or chemical grade stainless, which is what you want for coastal, wet, wash-down, or chloride exposure where 304 can pit.
3) How many M8 washers come in the Metallics JMSW8SS316 jar?
100 washers in a jar. The jar packaging keeps them together on a service truck or in a parts bin instead of loose in a bag, which is the point of the Metallics jar line.
4) Can I use these M8 stainless washers outdoors on an exterior electrical mount?
Yes. The 316 stainless alloy is the one specified for outdoor, coastal, and wash-down service, so these hold up on exterior strut, enclosure mounts, and rooftop equipment where plated steel washers would rust and stain the surface below.
5) Will stainless washers cause a problem if I mix them with galvanized bolts?
Keep the fastener stack in one metal where you can. Pairing 316 stainless washers with hot-dip galvanized or plated steel bolts in a wet location sets up galvanic action, and the zinc coating is the part that sacrifices. For exterior work, run stainless bolts and nuts with these washers.
6) Should I use a flat washer or a lock washer on an M8 connection?
A flat washer like the JMSW8SS316 spreads the clamp load and protects the surface under the nut, which is what you want against soft material, sheet metal, or a painted enclosure. It does nothing to resist loosening from vibration. On equipment that vibrates, use the flat washer against the material and add a split lock washer or a nylon-insert nut under the fastener head.
7) Where is the Metallics JMSW8SS316 washer made?
Country of origin is listed as multiple, meaning Metallics sources this item from more than one country depending on production run. The alloy and M8 sizing are the same regardless of origin.
How fast can I get the Metallics JMSW8SS316 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 JMSW8SS316 come with a warranty?
Absolutely. The Metallics JMSW8SS316 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 JMSW8SS316?
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Why buy the Metallics JMSW8SS316 from ZenSupply?
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