USS Flat Washer 1/2"

6 reviews

1/2" Flat Washer


1/2" USS Washers also called Sellers Standard thread, Franklin Institute thread and American Standard thread washers are a basic standard washer for inch based threaded fasteners.

    • OD: 1.375
    • ID: .562"
    • Height: .132"
    • Washer Pattern: USS Flat Washer
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Customer Reviews
4.7 Based on 6 Reviews
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Robert F.
United States United States

Product review

Very well crafted product. Would have no problem ordering from this vendor again

Greg C.
United States United States

Great Work!

All of the bolts and hardware received were beautiful. It was gave the rustic table we built exactly what we wanted. Also the service and communication was wonderful.

Keith B.
United States United States

Bolt head advertised size

The finish and appearance of the hardware was as pictured and exactly what I was expecting. The size of the head of the on the hardware wasn’t. When the heads were stamped to appear old and rusted and then colored it made the size increase by .030 to .050 witch wouldn’t allow an 4 or 8 point socket or open end wrench to be used. I had to go to a 12 point socket which didn’t have a lot of engagement with the flanks of the hardware and tended to damage the power coat or whatever the finish is. I had to install over 150 lags and an adjustable wrench was not going to cut it.


Old West Iron

Keith, I'm sorry to hear you had a less than satisfactory experience with our product. Because these heads are hand hammered (not machine stamped), we allow for slight variations in exact size. It is nearly impossible to give exact sizes on hand hammered products such as our lags because one hammer hit can change the measurements slightly. We are transparent about this on our website, you can find this notice at the top of the "Square Head Lag Screws" landing page. Typically the sizes you ordered would fit with 9/16" 8 point and 3/4" 8 point sockets, I'm sorry this was not your experience. For the finish, you can touch up with a Flat Black spray paint, we like Rust-oleum. If there is anything else we can help you with, please don't hesitate to call or email.

Brian P.
United States United States

Very satisfied customer

Excellent service, fast shipping! Good honest people to deal with.


Old West Iron

So glad we could help! Thank you!

Abed A.
United States United States

Good match for antique piano

Original square head blots went missing to attach the pedal lyre underneath our pre-civil war 1857 Steinway & Sons square grand piano. Didn't feel right purchasing bolts from Home Depot or Lowes because we wanted to match bolts as close as possible to the original hardware of the time period. We searched all over the country and Old West Iron's bolts were the closest match we could find (almost identical), and we thank you SO MUCH for keeping history alive! Cheers from California.


Old West Iron

Thank you so much! We are happy to be of service for something so important!