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OBSOLETE-Standard retention knob, BT30, M12X1.75; 45°, Solid-See JM51511HT

Category: Retention Knobs
Thread Size: M12X1.75
Angle: 45
Knob Diameter: 0.393
L1 Length: 0.6300
L2 Length: 0.785
Flange Thickness: 0.118
Hole Diameter: -
Neck Diameter: 0.236
Pilot Diameter: 0.510
Shoulder Diameter: 0.703
Wrench Flat Diameter: 0.549
Socket Part #: RKW30D
Number: JM51511
Alternate Part: JM51511HT
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