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Washer 5/16 Flat Wshr Pln-St (Jar 1000)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Family:
- Electrical Supplies
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Washers
Metallics JSW74P – Frequently Asked Questions
1) What size bolt does the Metallics JSW74P flat washer fit?
The JSW74P is a 5/16 inch flat washer, so it goes under the nut or head of 5/16 inch bolts and threaded rod. Plain steel, unplated, which is why it belongs indoors or in a dry conduit run rather than anywhere exposed to weather.
2) Can I use a plain steel flat washer like the JSW74P outdoors or in a damp location?
No. The JSW74P is plain, unplated steel with no corrosion coating, so it will rust in wet, outdoor, or washdown areas. Keep it to dry interior work and specify a galvanized or stainless 5/16 flat washer where moisture is a factor.
3) Will a 5/16 flat washer work with 3/8 inch threaded rod for hanging conduit or strut?
It won't. The JSW74P's inside diameter is sized for 5/16 inch fasteners, so 3/8 inch rod will not pass through it. Threaded rod for conduit and strut hangers is commonly 3/8 inch, so check the rod diameter before ordering; you want a 3/8 flat washer for that, and the 5/16 washer for 5/16 rod and bolts.
4) How many washers come in a jar of Metallics JSW74P?
One jar holds 1,000 of the 5/16 plain steel flat washers. That is the buying unit, so a hanger or strut job that eats a few hundred washers is covered by a single jar rather than a shelf of small bags.
5) What is a flat washer used for on an electrical installation?
A flat washer sits between the nut or bolt head and the material being clamped. It spreads the clamping load over a wider area so the fastener doesn't dig into or pull through softer material, and it gives the nut a clean bearing surface to turn against. On electrical work that means strut, hanger rod, enclosure mounting, and ground bar hardware. The JSW74P covers the 5/16 inch fasteners on that kind of work.
How fast can I get the Metallics JSW74P 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 JSW74P come with a warranty?
Absolutely. The Metallics JSW74P 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 JSW74P?
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 JSW74P 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.