Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukees website please click here:
Milwaukee Chuck Screw Left-Hand Thread
Model Number: 05-81-0085
The Milwaukee 05-81-0085 is a genuine OEM Left-Hand (LH) Thread Chuck Screw for use in compatible Milwaukee drills and driver- drills. The chuck screw is the fastener that passes through the center of the chuck and threads into a tapped hole in the spindle to retain the chuck on the tool. The left-hand thread is a critical design detail — because the drill spindle rotates clockwise during forward operation, a conventional right-hand thread chuck screw would tend to loosen under the torque of normal use. The left-hand thread counteracts the spindle's rotation direction, causing the chuck screw to tighten rather than loosen during forward drilling and driving. A stripped, missing, or incorrect chuck screw that cannot retain the chuck on the spindle requires replacement to restore secure chuck mounting and prevent the chuck from detaching during use.
Using a genuine Milwaukee OEM chuck screw ensures the correct left-hand thread specification, head drive type, and length for the spindle it serves. Installing a right-hand thread screw in place of this left-hand thread screw will cause it to loosen and back out during normal forward drilling operation. Always verify your catalog number and serial number on Milwaukee's website before ordering to confirm this is the correct chuck screw for your specific unit.
Features
- Genuine Milwaukee OEM left-hand thread chuck screw for compatible Milwaukee drills
- Left-hand thread tightens — rather than loosens — during forward spindle rotation
- Retains the chuck securely on the spindle during drilling and driving operation
- Must be replaced with a left-hand thread screw — a right-hand screw will back out during use
- Verify catalog number and serial number on Milwaukee's website before ordering
Specifications
- Thread Direction: Left-Hand (LH)
- Type: Chuck Retention Screw
Includes
- (1) Milwaukee 05-81-0085 Chuck Screw Left-Hand Thread
