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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: 1.123
L1 Length: 1.3750
L2 Length: 1.687
Flange Thickness: 0.250
Hole Diameter: 0.200
Neck Diameter: 0.860
Pilot Diameter: -
Shoulder Diameter: 1.500
Wrench Flat Diameter: 1.25
Socket Part #: RKW50
Number: JM17145
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