![]() B23G5/02- Thread-cutting tools Die-heads without means for adjustment.B23G5/00- Thread-cutting tools Die-heads.B23G- THREAD CUTTING WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH.B23- MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR.238000006011 modification reaction Methods 0.000 description 1. ![]() 238000007796 conventional method Methods 0.000 description 4. ![]()
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