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Washers 1/4 USS Flat St-zn (Box 7350)
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Country Of Origin:
- MUL
- Division:
- Electrical H1
- Pack Type:
- Box
- Product Family:
- Electrical Supplies
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Length:
- 9 in
- Product Height:
- 6.13 in
- Product Material:
- Steel Zinc
- Product Weight:
- 45.2 lbs
- Product Width:
- 9 in
Metallics WW80B – Frequently Asked Questions
1) What size bolt does the Metallics WW80B flat washer fit?
The WW80B is a 1/4 inch USS pattern 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 on strut, sheet metal, or an oversized hole. If you are fastening into thin material and need the bearing surface tight to the bolt, an SAE 1/4 washer is the better pick.
2) Can I use a 1/4 inch USS flat washer with 1/4 inch threaded rod on strut hangers?
Yes. The WW80B is sized for 1/4 inch fasteners and the USS pattern gives you extra bearing area, which is exactly what you want between a nut and a strut channel, a beam clamp, or a punched hanger where the hole is oversized. Pair it with a 1/4 inch lock washer or a nylon insert nut if the assembly sees vibration, since a flat washer alone does not resist loosening.
3) Are Metallics WW80B washers zinc plated for damp or outdoor use?
They are zinc plated steel, which handles indoor electrical work, mechanical rooms, and normally dry outdoor runs under cover. Zinc plating is a sacrificial barrier, not stainless, so for standing water, coastal exposure, or corrosive process areas you should step up to hot dip galvanized or stainless 1/4 washers instead.
4) How many washers come in a box of Metallics WW80B?
It ships as a bulk box of 7,350 pieces of 1/4 inch USS flat washers. That is a stockroom or job trailer quantity, not a handful for one fixture, so it suits electrical contractors hanging strut and fixtures across a whole building or an MRO crib standardizing on one washer size.
5) What is the difference between the 1/4 USS washer and a 1/4 SAE washer?
Same nominal bolt size, different footprint. The USS pattern used on the Metallics WW80B has a larger outside diameter and a slightly larger inside hole, made for structural and general construction work where holes are punched oversize. SAE washers are narrower and tighter to the bolt, better under small fastener heads or in tight counterbores where a USS washer would overhang the part.
6) How heavy is a full box of Metallics WW80B 1/4 inch washers?
A full box runs 45.2 lbs and measures 9 x 9 x 6.13 inches. Worth knowing before you put it on a shelf or send it up a ladder, it is a one hand carry for most people but it is dense for its size.
How fast can I get the Metallics WW80B 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 WW80B come with a warranty?
Absolutely. The Metallics WW80B 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 WW80B?
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 WW80B 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.