OSG Spiral tap For machining large parts A-SFT Thread type: U

Stable chip shape with cutting edge specification that emphasizes sharpness. Uneven helix grooves promote chip evacuation, greatly improving chip evacuation. Compatible with a wide range of work materials. Achieves internal threads that do not pluck even with difficult-to-machine materials. Supports a wide range of processing equipment, from manual drilling machines to the latest machining centers. All sizes are protruding on the thread side and the center is removed. For machining large parts: (1) Long flute length and overhang prevent troubles with chips. (Total length: Longer DIN standard, Shank: Conventional JIS standard) (2) Prevent chipping by half-mounting processing. (3) With oil hole: Either internal or external lubrication system can be selected for stable machining.
Low carbon steel for machining large parts (C ~ 0.25%): ○ Medium carbon steel (C0.25% ~ 0.45%): ◎ High carbon steel (C0.45% ~): ◎ Alloy steel: ○ Quality steel (25 to 35 HRC): ◎, Stainless steel (up to 35 HRC): ○, Tool steel: ○, Cast steel: ○, Ductile cast iron: ○, Copper: ○, Brass: ○, Brass casting: ○, Bronze: ○, Aluminum rolled material: ○, Aluminum alloy casting: ◎, Zinc alloy casting: ○, Magnesium alloy casting: ○
*Accuracy is the recommended tap accuracy for 2B female threads. *Tap accuracy is not a guarantee of female thread accuracy. *We do not recommend regrinding. *Please note that if you use it on a machine with unstable feed, it may cause problems such as enlargement of female threads.