Dormer E237-M4 63 mm长 直柄 HSS-E M4 直槽 螺纹丝锥

Cobalt metric pitch left-hand threaded machine tap bits E237

Range of cobalt metric pitch left-hand threaded machine tap bits.
These tap bits have a short I/P of
2 threads.
The tap bit tolerance class is 6H, the cutting angle is 10° and the tap flutes are straight. The cut is left-handed, and the stem is reinforced.
These high-quality tap bits are ideal for tapping in blind or through-holes.

Standard: DIN 371