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Washers 10 USS Flat St-zn (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:
- Steel Zinc
- Product Weight:
- 0.21 lbs
- Product Width:
- 3 in
Metallics JWW79 – Frequently Asked Questions
1) What size bolt do the Metallics JWW79 flat washers fit?
The JWW79 is a #10 USS flat washer, so it pairs with #10 machine screws and bolts. USS pattern means a larger outside diameter and bigger hole than the SAE pattern in the same nominal size, so it spreads load over more surface. If you need a tighter fit against the fastener head on thin sheet metal or a small-headed screw, an SAE #10 washer is the better pick.
2) Are the JWW79 washers plated for corrosion resistance, and can I use them outdoors?
They are steel with a zinc plating, which handles dry indoor and protected locations well. Zinc plated steel is not a marine or constantly wet material, so for exterior exposure, washdown areas, or coastal work, step up to stainless.
3) Can I use a #10 USS flat washer with a lock washer on the same bolt?
Yes, and that is the normal stack: the flat washer goes against the material to spread the load, the split lock washer sits between the flat washer and the nut. The JWW79 is a plain flat washer, so if you need vibration resistance you will have to order lock washers separately.
4) What part number do I order for Metallics #10 USS zinc flat washers?
Order Metallics JWW79. That single MPN covers the #10 USS flat washer in zinc plated steel, 100 to a jar, with no finish or size options to specify.
5) Are the Metallics JWW79 washers made to a dimensional standard?
They follow the ANSI dimensional standard in the USS pattern for #10, which is what keeps the outside diameter and hole size consistent jar to jar when you are standardizing fasteners across a facility. Country of origin is listed as multiple.
How fast can I get the Metallics JWW79 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 JWW79 come with a warranty?
Absolutely. The Metallics JWW79 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 JWW79?
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 JWW79 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.