din-76-3(1)
梯形螺纹、锯形螺纹、圆螺纹及其他粗牙螺纹的退刀和螺纹退刀槽
Run out and undercut for metric trapezoidal screw threads, knuckle screw threads, bulltress screw threads and other screw threads of coarse pitches
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Run out and undercut for metric trapezoidal screw threads, knuckle screw threads, bulltress screw threads and other screw threads of coarse pitches