Special tap used to cut .255-60 threads in a 1911 frame for Repair (oversize) Bushings. Custom ground by Challis Grips, this tap will ream the hole to the proper size and then cut the threads; pre-drilling is not required. The closeup photo shows the custom reamer grind. To our knowledge no other oversize bushing tap is ground this way, Others require pre-drilling to .234" before the hole can be tapped.
Consider buying our Frame Repair Tap Guide if you have concern about holding the tap perpendicular to the frame.
This tap will ream the hole to .234" and then begin cutting the required .255-60 threads. We suggest the use of our Frame Repair Tap Guide when using the tap.
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