M4 HSS Nitriding Treatment Machine Spiral Flute Screw Thread Forming Tap 4mm*0.7mm*55mm M8

Spiral wire tapping is a spiral type. Spiral wire tapping in tapping and to the spiral groove of the
upward rotating effect, able to easily put iron discharge hole, in order to avoid iron residue or the
blockage in the groove, resulting in a screw tap breaking edge crack.

Specifications:
Material:HSS
:Carbon black
Type size:
M4: 4mm*0.7mm
Length:55mm

Features:
-Growth in the service life and out the highest accuracy of the thread.
-Spiral screw is suitable for materials with high toughness, and is not
suitable for cast iron scraps into fine materials

Package include:
1xscrew tap 4mm*0.7mm*55mm









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