Milwaukee
Milwaukee Tool SHOCKWAVE Lineman's 3-in-1 Distribution Utility Socket
- SKU:
- MLW49-66-5101
- Availability:
- Usually Ships Same Day
- Weight:
- 2.10 LBS
Description

DUTY®
Distribution Utility
3-in-1 Square Socket
A 1/2-inch drive utility socket with three square sizes and a push-and-twist barrel lock for one-sided fastening.
Product Overview
The distribution socket serves the listed square nuts and square-headed machine bolts used on utility poles.
A push-and-twist lock changes size from one side; an internal shield helps keep debris out.
- Three-in-one accessWorking-side size changes.
- Barrel-lock controlOne-hand push/twist changes.
- Debris protectionInternal shield resists contamination.
- Adapter included7/16-inch hex to 1/2-inch square.
Technical Specifications
- Square drive
- 1/2 in
- Square nut range
- 3/4–1-1/8 in
- Machine bolt range
- 1/2–3/4 in
- Size selection
- Push-and-twist lock
- Adapter input
- 7/16 in hex
- Interior protection
- Debris shield
Choose the Correct Fit
Check the exact supported square nut and bolt sizes for this distribution model. Do not assume all sizes within the endpoints fit.
Connect the 1/2-inch square drive directly or use the supplied 7/16-inch hex adapter with a matching quick-connect chuck.
Installation & Care
Select the needed opening using the push-and-twist barrel lock. Confirm that the selected position is locked before applying force.
Keep the locking mechanism and shield clear of debris. Inspect for cracks, excessive wear or a lock that does not engage securely.
Small Details. Big Jobsite Energy.
Get set. Stay focused. Make your next move count.
THE NEXT JOB.
Ask Willy:
Need help selecting a utility socket? Tell Willy your square nut or machine-bolt sizes and tool chuck so the GetPipe team can check the model.
Important Product Questions
Which hardware sizes does it serve?
Square nut sizes: 3/4, 1, 1-1/8 inches. It is also listed for 1/2, 5/8, 3/4-inch square-headed machine bolts.
Must I remove it to change sizes?
The three-in-one design permits single-sided size changes with the push-and-twist barrel lock. Check that the new position is secure before fastening.
What drive connection is supplied?
The socket has a 1/2-inch square drive. A 7/16-inch hex to 1/2-inch square adapter is included for compatible quick-connect chucks.