JM31558HT

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High Torque© retention knob, CAT50, 1"-8, 15°, Coolant through

Retention Knob Information and Installation (PDF)

Retention Knob Installation Video

Category: Retention Knobs
Thread Size: 1.00-8
Angle: 15
Knob Diameter: 1.100
L1 Length: 0.9901
L2 Length: 1.344
Flange Thickness: 0.274
Hole Diameter: 0.392
Neck Diameter: 0.825
Pilot Diameter: 1.031
Shoulder Diameter: 1.438
Wrench Flat Diameter: 1.245
Socket Part #: RKW50
Number: JM31558HT
Solid Version: JM51041(86)
Alternate Part: JM31558HTHS
Country of Origin: USA

This knob is a replacement for the following parts:

ManufacturerPart Number
For Machines (see disclaimer)*: 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.