JM31617HS

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High Strength (HS) retention knob, CAT40, 5/8-11; 15°; Coolant through; Made from 9310H steel, 40% stronger; O-Rings included; replaces JM31617

Retention Knob Information and Installation (PDF)

Retention Knob Installation Video

Category: Retention Knobs
Thread Size: .625-11
Angle: 15
Knob Diameter: 0.746
L1 Length: 0.7920
L2 Length: 1.028
Flange Thickness: 0.274
Hole Diameter: 0.236
Neck Diameter: 0.549
Pilot Diameter: 0.641
Shoulder Diameter: 0.902
Wrench Flat Diameter: 0.746
Socket Part #: RKW40
Number: JM31617HS
Solid Version: JM31616HS, JM31616HTHS
Alternate Part: JM31617HS, JM31617HTHS
Thread Side O-Ring: S-15
Country of Origin: USA

This knob is a replacement for the following parts:

ManufacturerPart Number
Kenn 2: 2878506
For Machines (see disclaimer)*: Doosan, Kitamura, Leblond Makino, Matsuura

* 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 sales@jmperformanceproducts.com 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 www.P65Warnings.ca.gov.