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Washers 1/4 USS Flat St-zn (Jar 1000)
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:
- 4.5 in
- Product Height:
- 7.25 in
- Product Material:
- Steel Zinc
- Product Weight:
- 6.15 lbs
- Product Width:
- 4.5 in
Metallics JWW80M – Frequently Asked Questions
1) What size bolt does the Metallics JWW80M flat washer fit?
The JWW80M is a 1/4 inch USS flat washer, so it pairs with 1/4-20 bolts, screws, and threaded rod. USS pattern means a wider outside diameter and a larger hole than the SAE pattern in the same nominal size, which is what you want when you are spreading load across sheet metal, strut, or wood rather than seating against a machined surface.
2) Are these washers plated for corrosion resistance?
Yes, the material is zinc plated steel. That handles dry indoor and protected electrical work, panel and strut mounting, device boxes, and general MRO fastening. For sustained outdoor exposure, washdown areas, or coastal sites, step up to a hot dip galvanized or stainless washer instead.
3) Should I use a 1/4 USS flat washer or an SAE washer for strut and channel work?
Go USS for strut, channel, sheet metal, and wood. The larger outside diameter bridges the slot or oversized hole and keeps the nut from pulling through. SAE washers are smaller in OD and are the right call when the washer has to fit inside a counterbore or sit on a narrow machined land. The JWW80M is the USS pattern in 1/4 inch.
4) Can I use these flat washers under a nut on 1/4 inch threaded rod hanging conduit or pipe?
Yes. A 1/4 inch USS flat washer under the nut on 1/4-20 rod spreads the clamp load across the hanger or clip and stops the nut digging in. For a vibration prone run, add a split lock washer between the nut and the flat washer; the flat washer alone does not provide locking.
How fast can I get the Metallics JWW80M 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 JWW80M come with a warranty?
Absolutely. The Metallics JWW80M 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 JWW80M?
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 JWW80M 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.