Aloris ATB Series threading bars can be used for internal right or left-hand threading. Available in five sizes, these bars accommodate standard triangular-shaped throwaway threading inserts in a hardened seat.
The ATB Series shank has three flat sides specially designed for use in Aloris boring bar holders #1, #2, #13, #4 and # 41. They may also be used in any Aloris boring bar holder.
Excellent for CNC machines.
Dimensions (see image):
A: 13/16"; B: 23/4"; C: 11/16"; D: 11/4"; L: 12"; I.C.: 3/8"
Insert Screw ASA3T