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Washers 5/16 Ext Tooth Lock SS (Jar 100)
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Country Of Origin:
- MUL
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Washer Type:
- Lock Washer
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Length:
- 3 in
- Product Height:
- 2.15 in
- Product Material:
- 410 Stainless Steel
- Product Weight:
- 0.16 lbs
- Product Width:
- 3 in
Metallics JLWX7SS – Frequently Asked Questions
1) What size bolt does the Metallics JLWX7SS external tooth lock washer fit?
The JLWX7SS is a 5/16 inch external tooth lock washer, so it seats under the nut or head of a 5/16 inch bolt or screw. It is sold by the jar of 100.
2) Are these 5/16 lock washers stainless, and will they hold up outdoors?
They are made from 410 stainless steel, a hardenable martensitic grade that takes the spring temper an external tooth washer needs. It gives better corrosion resistance than plain steel for damp or exterior work, though it is not as corrosion resistant as 18-8 or 316 stainless in salt or chemical exposure.
3) Should I use an external tooth lock washer or a split lock washer on a 5/16 ground connection?
External tooth is the right pick for electrical bonding and grounding. The teeth bite through paint, plating, and light oxide on the panel or enclosure surface, cutting a metal-to-metal path while resisting loosening. A split ring washer only resists back-off; it does not scrape a conductive path. The JLWX7SS is the external tooth type in 5/16.
4) Can these Metallics lock washers be used on a painted enclosure or strut without stripping the finish first?
That is what the external teeth are for. They dig into the coating as the fastener is torqued, so a 5/16 bolt through a painted panel, strut, or enclosure flange still gets metal-to-metal contact at the joint. Understand that the paint under the washer is broken, so on exterior work the joint should be sealed or the coating touched up around it.
5) Do I need anything else with the JLWX7SS washers to make up a 5/16 bonding connection?
The jar contains washers only. You supply the 5/16 bolt, nut, and any flat washer the joint calls for. Where the washer is doing the bonding work, put the toothed washer directly against the metal surface being bonded, not on top of a flat washer, or it has nothing to bite into.
6) How many 5/16 external tooth washers come in a jar of the Metallics JLWX7SS?
One hundred washers per jar. The jar is a reclosable bin container that suits a van stock or shop bench better than a loose bag, and the whole jar weighs 0.16 lbs.
7) How much shelf or drawer space does a jar of JLWX7SS washers take up?
The jar measures 3 x 3 x 2.15 inches, so it fits a standard parts drawer or a small bin slot on a service truck. Handy if you are standardizing 5/16 hardware across a facility and want one jar at each panel location.
8) Where is the Metallics JLWX7SS washer manufactured?
Country of origin is listed as multiple, meaning Metallics sources this 5/16 external tooth washer from more than one production country depending on the run.
How fast can I get the Metallics JLWX7SS 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 JLWX7SS come with a warranty?
Absolutely. The Metallics JLWX7SS 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 JLWX7SS?
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product
selection,
installation tips, and troubleshooting. Contact Us
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