BESLY 1/4 - 18 HSS BLACK OXIDE NPT SPECIAL GRIND ON END OF TAP AND THREAD DIAMETER FOR TOUGH MATERIALS. BESLY PERFORMED ALL THE GRINDING. ALL TAPS ARE SHARP AND INSPECTED BEFORE SHIPPING.
This auction is for 3 used REGAL Spiral Flute Taps 7/16-20 taps HSS The (GH) is 21 which indicates that the taps were made to cut the pitch dia. .010 oversize . These werre used on a special job but there is no reason they cannot accomodate a regular commercial 7/16-20 requirement...(considering the price)..
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