HIgh Quality BT Pull studs,45 Degree pull studs Morse BT30/40/50 pull stud, Deep cooling treatment and thermal aging treatment can reduce residual stress and improve durability and accuracy stability.Adopt surface coating technology to improve the anti-wear ability of the surface, better anti-rust and anti-corrosion effect, more stable accuracy, smoother surface and more beautiful appearance.
BT pull stud Material: 20CrMnTi;
BT pull stud Carburizing depth: > 0.8;
Pull Stud Bt40,Bt30 Pull Stud Head hardness: 54-57HRC;
CNC pull stud The hardness of threads and other parts is low: 35+5HRC,( 57344877, 57086549,the core hardness of protective handle threads can withstand impact);
accuracy of stability.

Cnc Tools Holder Pull Stud Cryogenic treatment
1. The ultra-long cryogenic treatment at - 185 C transforms nearly all residual austenite into martensite.
2. Precipitated nano-carbide particles increase hardness and toughness.
3. Reducing residual stress;
4. The wear resistance is improved significantly.

Aging treatment
20-40 h super-long heat aging removes residual internal stress during grinding.