Dormer Threading Tap, M4 Thread, Metric Standard, Machine Tap

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

Rolled Flute Taps

• Bright finish fluteless taps; for use on copper, aluminium, magnesium, brass, zinc etc.
• Flash chrome finish fluteless taps; for use on steel up to 850N/mm² tensile strength, free matching and austenitic stainless steel
• Made to ISO529 standard for tapping blind and through holes in a wide range of ductile materials
• Smooth non-cutting action produces greater thread formed strength, higher life expectancy and increased tapping speeds especially where excessive tension occurs