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Your cart is empty.All American Drill Bushing are made in the USA from steel obtained from a domestic steel foundry. Our standard bushings are made of C1144 and heat treated to Rockwell C62-64. Concentricity is held at 0 to .0003 T.I.R maximum for ID sizes of 1/8 to ½ and 0 to .0005 T.I.R Max for any other size. A blended Radius on the drill entrance improves drill entry and alignment which prevents tool wear and breakage. All of our products are free of conflict materials of any kind and conform to Reach.
Al Savage
Reviewed in the United States on October 22, 2020
Suited my application perfectly. I did not measure them for accuracy -- I didn't need close tolerances for this project -- but the finish is superb.
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