Wholesale Retention Knob DIN 69872 D30 D40 D50 D60 From Factory Direct Sales Coolant Hole Type is Available

Product Features

1. Each pull stud is tested thoroughly which ensures the quality of the pull stud

2. Made from fine alloy steel 20CrMnTi with treatment to HRC 53-57

3. Hard outside and soft inside, with higher wear resistance and better toughness

4. High quality black oxide ensures long pull stud life and a non-rusting surface

5. Precision turning on all critical surface

6. Large selection for specific machine models, custom design accepted

Technology:

High quality low carbon alloy steel processing thread after carburizing and quenching;
The holder with high hardness (Resistance to wear and long service life);
The thread with slightly low hardness (contributing to protecting the thread of tool holder);
The core with the lowest hardness (resistance to shock), accurate dimensions and applicable for high-end tool holder.

	Machine Parts Name: Flange - Black Oxide  Brand: SFX  Origin: China  Milling and polishing ensure the smooth of the flat.
Main Features Name: Head  Brand: SFX  Origin: China Thrust surface and non-thrust surface are achieved by one time cutting. It ensures the accuracy and smooth.
	Machine Parts Name: Thread Brand:SFX Origin: China Unique patented design of appearance makes thread more beautiful and easier to process. The polishing process ensures thread smooth and a long life.