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USS Flat Washer 1/2"


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
Lead Time:
  • $3.00
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Customer Reviews
4.8 Based on 8 Reviews
5 ★
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Susan P.
United States United States

Perfect finishing touch

Just as pictured, shipped quickly and very good quality. Would buy again and probably will.

Old West Iron USS Flat Washer 1/2 Review

Old West Iron

Thank you for your review and your photo! It looks great!

Barry B.
United States United States

Great company great products

Look period correct for my chuck wagon, very pleased

Robert F.
United States United States

Product review

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


Old West Iron

Thank you for the positive feedback! looking forward to working with you 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.