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, and will therefore require pre-drilling to .234" before the hole can be tapped.
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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