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Standard retention knob; CAT45, 3/4"-10; 45°, Coolant through

Retention Knob Information and Installation (PDF)

Retention Knob Installation Video

Category: Retention Knobs
Thread Size: .750-10
Angle: 45
Knob Diameter: 0.940
L1 Length: 0.5800
L2 Length: 0.820
Flange Thickness: 0.160
Hole Diameter: 0.375
Neck Diameter: 0.603
Pilot Diameter: 0.761
Shoulder Diameter: 1.190
Wrench Flat Diameter: 0.995
Socket Part #: RKW45
Number: JM11133
Coolant Version: JM11135
Country of Origin: USA

This knob is a replacement for the following parts:

ManufacturerPart Number
Retention Knob Supply: RK111-33
Sandvik: 390.45-3/4 UNC-01
Seco: 1662
Command: RC5E-0001
Davies: PSC-375
Kennametal: RK45CV
Older Kennametal: 1017007
Lyndex: C45STD*
MSC: 1401793
Parlec: 45TRK

* 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