SK40 (DIN69871) Pull studs, 10 pcs, metric, for HAAS CNC Mills

The SK draw stud is made of 20CrMnTi material. It is mainly used for connecting the tool spindle and the toolholder. In addition, there are other types of pull studs such as BT, ISO 7388, CAT, Mazak, MTB, NT. The hardness of the SK traction stud is 52-58HRC. The surface is blackened and ground for extra strength and corrosion protection. The overall length of the stud is 54mm and the threads are M16 size.

The type of SK pull stud can be D40 / SK40. The SK stud is used for a DIN40 toolholder. The manufacturing process involves expensive heat treatment in several stages to ensure optimum strength and resistance to wear. Locations with the highest stresses are subjected to special treatment to improve their performance. The SK traction stud has high impact toughness, making it durable and reliable. In addition, it has a high accuracy that can reach 0.015 mm, which is especially important for precision operations.