Machine Tap M5 x 0.8 HSS-E DIN 371

HSS-E machine tap, M5 coarse thread, 0.8 mm pitch, to DIN 371.

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Specifications

Thread size	M5
Pitch	0.8 mm
Recommended tap drill	4.2 mm
Overall length	70 mm
Shank diameter	6 mm
Material	HSS-E (cobalt)
Thread form	ISO metric coarse
Standard	DIN 371

Description

A cobalt-alloyed HSS-E machine tap for cutting M5 coarse internal threads under power, in a tapping head, a rigid-tapping spindle or a tapping attachment. The tap drill size for a nominal 65% thread engagement is 4.2 mm — drilling undersize is the usual reason taps break, because thread engagement above about 75% multiplies torque for almost no gain in joint strength. Spiral point for through holes; use a spiral flute version in blind holes so the chip is pulled back out of the hole.