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High Torque© (HT) retention knob; CAT60, 1.25"-7; 45°, Coolant through

Retention Knob Information and Installation (PDF)

Retention Knob Installation Video

Category: Retention Knobs
Thread Size: 1.250-7
Angle: 45
Knob Diameter: 1.258
L1 Length: 2.0846
L2 Length: 2.557
Flange Thickness: 0.549
Hole Diameter: 0.315
Neck Diameter: 0.942
Pilot Diameter: 1.285
Shoulder Diameter: 2.210
Wrench Flat Diameter: 1.804
Socket Part #: N/A
Number: JM31120CHT
Country of Origin: USA

This knob is a replacement for the following parts:

ManufacturerPart Number

* Retention knobs are not interchangeable. Machines are only given as a reference, JMPP makes no guarantee this is the correct knob for your machine. Please call us at 1-800-322-7750 or email for knob identification help.

WARNING: The steel alloy used in this product contains chromium and nickel. This product can expose you to chemicals including chromium and nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to