Type 0141.4 HELICOIL® machine tap to create holding threads for HELICOIL® thread inserts with metric normal and fine screw threads as per DIN 8140-2. The tap is suited for blind holes.
Properties: • Spiral flute 45° right-hand spiral • 2-pitch chamfer • 15 % cutting angle • For wrought aluminium alloys with 500 N/mm² strength max. • Also for cast aluminium alloys with very low Si content (= 2 %) • Tolerance class 5H (6H mod.)
Note: • Up to M8 2-flute • From M9 3-flute and additionally for soft steels with 450 N/mm² strength max.