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OBSOLETE-Standard retention knob; BT50, M24X3, coolant through-See JM31643HT

Category: Retention Knobs
Thread Size: M24X3.0
Angle: 45
Knob Diameter: 0.903
L1 Length: 1.3760
L2 Length: 1.770
Flange Thickness: 0.392
Hole Diameter: 0.236
Neck Diameter: 0.668
Pilot Diameter: 0.984
Shoulder Diameter: 1.492
Wrench Flat Diameter: 1.175
Socket Part #: RKW50M
Number: JM31643
Solid Version: JM31117
Alternate Part: JM31643HT
Country of Origin: USA

This knob is a replacement for the following parts:

ManufacturerPart Number
Retention Knob Supply: RK316-43
Seco: 44003
Techniks: 17824
Kenn 2: 2878453
Command: RB6M-0001-C
Davies: PSC-446X45
Lyndex: B50-4500H
MSC: 1401850
Parlec: 5003TRKC
For Machines (see disclaimer)*: Doosan, Haas, Viper

* 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