You may also like
Washers 7/16 Flat St-zn (Jar 100)
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Division:
- Electrical H1
- Field Application:
- Metal to Metal
- Fits Bolt Size:
- 16-Jul IN
- Inside Diameter:
- 15/32 IN
- Outside Diameter:
- 59/64 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Washer Type:
- Flat Washer
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Finish:
- Zinc Chromate
- Product Length:
- 3 in
- Product Height:
- 2.15 in
- Product Material:
- Steel Zinc
- Product Weight:
- 1.04 lbs
- Product Width:
- 3 in
Metallics JSW79 – Frequently Asked Questions
1) What bolt size does the Metallics JSW79 flat washer fit?
The JSW79 is a 7/16 inch flat washer. Its inside diameter is 15/32 inch, which gives the small clearance a 7/16 bolt or threaded rod needs to pass through without binding. Outside diameter is 59/64 inch, so it spreads load across just under an inch of bearing surface.
2) Are these 7/16 washers OK for outdoor or damp electrical installs?
The JSW79 is zinc-plated steel with a zinc chromate finish, which handles general indoor and sheltered outdoor use. For sustained wet, washdown, or corrosive environments, step up to stainless flat washers instead of a zinc-plated carbon steel washer.
3) How many washers come in a jar of Metallics JSW79?
One jar holds 100 of the 7/16 flat washers, and it ships as a jar rather than a loose bag, which is what makers of electrical rough-in kits and van stock usually want. Jar weight is 1.04 lbs.
4) What is a flat washer like this used for on a metal-to-metal connection?
Metal to metal is the stated field application for the JSW79. A flat washer distributes the clamp load of the nut or bolt head over a wider area and protects the mating surface, it does not provide any locking action. If you need the fastener to resist loosening from vibration, pair it with a lock washer or a nylon insert nut, a flat washer alone will not do that.
5) Are the Metallics JSW79 washers made to a dimensional standard?
The JSW79 is built to ANSI dimensions, so the 15/32 inch hole and 59/64 inch outside diameter match standard 7/16 flat washer geometry and will interchange with other ANSI-dimensioned 7/16 flat washers already in the assembly. Country of origin is listed as multiple.
How fast can I get the Metallics JSW79 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 JSW79 come with a warranty?
Absolutely. The Metallics JSW79 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 JSW79?
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 JSW79 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.