Milwaukee
Milwaukee Tool SHOCKWAVE Impact Duty 3/8"Drive 15MM Standard 6 Point Socket
- SKU:
- MLW49-66-6139
- Availability:
- Usually Ships Same Day
- Weight:
- 0.13 LBS
Description

DUTY®
SHOCKWAVE™
Standard Socket
Choose this 15 mm standard six-point socket for 3/8" drive impact tools. Match the opening and drive size to your fastening setup.
Product Overview
Forged steel construction supports demanding fastening work. The six-point opening uses non-slip hex geometry designed to help protect fastener corners.
Stamped, ink-filled size markings make identification easier at the toolbox. A laser-etched part number provides another reference when matching or replacing a socket.
- Readable size marksStamped and ink filled for wear resistance.
- Non-slip hex geometryDesigned to help reduce fastener rounding.
- Dual-hole connectionA ring groove supports attachment and removal.
- Part-number referenceLaser-etched identification for reordering.
Technical Specifications
- Manufacturer part
- 49-66-6139
- Drive size
- 3/8"
- Socket opening
- 15 mm
- Profile
- Standard
- Point count
- 6-point
- Construction
- Forged steel
Match both sizes.
The 3/8" drive fits the tool connection; the 15 mm opening fits the fastener. These dimensions serve different purposes.
Confirm the fastener size and metric measurement system before ordering. Select a matching drive connection for your tool.
Check the working space.
Check the access around the fastener and the space available for a standard-profile socket before starting the job.
Use the manufacturer chart to locate part 49-66-6139. Follow your tool instructions for securing and using impact accessories.
Milwaukee Product Documentation
Milwaukee SHOCKWAVE socket reference chart. Locate part 49-66-6139 for its listed dimensions.

Ask Willy:
Need help matching this 15 mm socket to your setup? Send the GetPipe.com team your tool’s drive size and the fastener size so we can help you check the fit.
Important Product Questions
Which drive size does this socket use?
It uses a 3/8" drive. The drive size describes the tool connection, not the fastener opening.
What size and profile is this socket?
It has a 15 mm metric opening, a standard profile and a six-point design.
Is this an impact-duty socket?
Yes. This is a Milwaukee SHOCKWAVE Impact Duty socket with forged steel construction. Use it with a correctly matched tool and follow the tool instructions.