CAT 50 Standard Retention KnobsRetention knobs, also known as pull studs, allows you to mount a tool holder to the machine spindle. Using a low quality retention knob can lead to poor tool life and run out, which is all of our retention knobs have threads that are rolled for strength and durability. We have standard style knobs for most machines in stock, as well as coolant thru and many special designs available and able to be shipped out same day. We are also able to manufacture

Retention knobs available separately for purchase

the outside taper and inside taper are concentric within

5000 inches or in metric sizes from 2mm up to 13mm

The shank is held concentric to the taper within one tenth (TIR

They are manufactured from mill-certified hardened alloy steel

These shell mill holders are produced to the AT3 standard

Manufactured in accordance with AISI / ASME B5

This product requires the use of a retention knob fitted to your machine specifications

This product requires a retention knob that is fitted to your machine specifications

If you have any questions about the style retention knob you need

as well as coolant thru and many special designs available and able to be shipped out same day

Stub arbors include (1) standard arbor nut and (3) arbor spacers