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OBSOLETE-Standard retention knob, CAT50, 1"-8, 90°, Solid

Category: Retention Knobs
Thread Size: 1.00-8
Angle: 90
Knob Diameter: 0.903
L1 Length: 1.3840
L2 Length: 1.784
Flange Thickness: 0.695
Hole Diameter: -
Neck Diameter: 0.667
Pilot Diameter: 1.028
Shoulder Diameter: 0.903
Wrench Flat Diameter: 0.741
Socket Part #: RKW50
Number: JM31244A
Country of Origin: USA

This knob is a replacement for the following parts:

ManufacturerPart Number
Retention Knob Supply: RK312-44A
Seco: 1687
Command: RB6E-0100**
Lyndex: C50-MAZAK
For Machines (see disclaimer)*: Mazak

* 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