Ground surfaces provide accurate positioning inside of t-slot. These nuts are manufactured from S45C(JIS) / CK45(DIN) heat treated to HRC 30-35 and have a black oxide surface finish.
Aluminium serrated pie jaws to suit a 10 Inch power chuck. Jaws are manufactured from 6061 Aluminium. Pie jaws creat a full wrap around to reduce the potential for marking and deformation.