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Washer 1/4 Flat Wshr BO (Jar 100)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Washers
Metallics JSW73BLK – Frequently Asked Questions
1) What bolt size does the Metallics JSW73BLK flat washer fit?
It's a 1/4 inch flat washer, so it pairs with 1/4-20 machine screws and bolts, 1/4 inch hanger rod hardware, and 1/4 inch anchors. If your bolt is 5/16 or 3/8, you need a different size washer.
2) What does the BO in Metallics JSW73BLK mean, and where should a black oxide washer be used?
BO is black oxide, a dark black conversion coating. It's chosen on electrical and fixture work where a bright zinc washer would stand out, for example black strut, black rod, black channel, or exposed trim and fixture mounting. Black oxide offers only light corrosion protection, so for wet or outdoor locations use a galvanized or stainless washer instead.
3) How many washers come in a jar of Metallics JSW73BLK?
Each jar holds 100 of the 1/4 inch black oxide flat washers. The jar pack keeps them contained on a van shelf or in a job box rather than loose in a bag, which is why electrical contractors and MRO stockrooms buy washers this way.
4) Should I use a flat washer or a lock washer for mounting electrical boxes and strut?
A flat washer like the JSW73BLK spreads the load under the nut or bolt head so the fastener doesn't dig into sheet metal, strut, or a fixture flange, and it bridges slightly oversize holes. It does nothing to resist loosening from vibration. If the connection sees vibration, use the flat washer against the material and add a split lock washer or a lock nut behind it.
5) What part number do I order for the Metallics 1/4 inch black oxide flat washer?
Order Metallics JSW73BLK. That single part number covers the 1/4 inch black oxide flat washer in the 100 count jar, so there is no finish or quantity option to specify separately.
How fast can I get the Metallics JSW73BLK 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 JSW73BLK come with a warranty?
Absolutely. The Metallics JSW73BLK 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 JSW73BLK?
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 JSW73BLK 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.