Retention stud bolt JISB6339 BT40 90d.
Pull-stud, JIS B 6339, without hole
Design: Hardened in operation, with a hardness of 58 ± 2 HRC, hardness penetration depth 0.5-0.8. Thread is soft-rolled to DIN, ground parallel and burnished.
Application: For tools with taper shank DIN 69871 and JIS 6339 (MAS BT) in machining centres and CNC machines.