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MILWAUKEE Standard Impact Socket: 3/4 in Drive Size, Metric, 40 mm Socket Size, 6-Point - 3/4" Drive Impact Sockets
MILWAUKEE3/4" Drive Impact Sockets

MILWAUKEE Standard Impact Socket: 3/4 in Drive Size, Metric, 40 mm Socket Size, 6-Point

The MILWAUKEE Standard Impact Socket is a 3/4" drive impact socket with a 40 mm metric, 6-point design. It features a Black Phosphate finish and is identified by manufacturer part number 49-66-6378.

SKU 3G-OTH-293701

Brand
MILWAUKEE
Item
Standard Impact Socket: 3/4 in Drive Size, Metric, 40 mm Socket Size, 6-Point
Category
3/4" Drive Impact Sockets
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Technical Specifications

MILWAUKEE
Manufacturer Part Number
49-66-6378
Type
Metric, 6-Point, Std
Socket Size
40 mm
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MILWAUKEE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MILWAUKEE Standard Impact Socket is a 3/4" drive impact socket with a 40 mm metric, 6-point design. It features a Black Phosphate finish and is identified by manufacturer part number 49-66-6378.

Frequently Asked Questions

What is the MILWAUKEE Standard Impact Socket 49-66-6378 used for?

This 3/4" drive impact socket is designed for heavy-duty fastening and loosening of metric 40 mm nuts and bolts. It is commonly used in automotive repair, construction, and industrial maintenance where high-torque impact wrenches are employed. The 6-point configuration reduces fastener rounding.

What are the specifications of the MILWAUKEE 49-66-6378 impact socket?

The MILWAUKEE Standard Impact Socket has a 3/4" square drive, a 40 mm metric socket size, and a 6-point design. It features a Black Phosphate finish for corrosion resistance. The manufacturer part number is 49-66-6378. This socket is built for use with impact tools and meets MILWAUKEE's durability standards.

Where to buy the MILWAUKEE 49-66-6378 impact socket worldwide?

3G Electric supplies the MILWAUKEE 49-66-6378 impact socket to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this socket for your operations.

How to select the correct MILWAUKEE impact socket size?

To select the correct MILWAUKEE impact socket, match the drive size (3/4") to your impact wrench, and choose the socket size (40 mm) that fits your fastener. Ensure the socket is 6-point for hex fasteners and rated for impact use. The Black Phosphate finish indicates standard-duty protection. Always verify the manufacturer part number 49-66-6378 for exact fit.

Used in

Common applications for MILWAUKEE
Electrical panel assembly — Milwaukee U-style crimping dies (49-16-U250) for 250 kcmil copper lugs
Automotive repair — Milwaukee 1/2 in drive impact sockets (49-66-6242) for removing lug nuts
Construction framing — Milwaukee hex bit sockets (45-34-1079) for driving hex-head screws
Industrial maintenance — Milwaukee cordless crimping tool kit (2678-22BG) for cable terminations
Tool repair — Milwaukee cord set (22-64-0121) for replacing damaged power cords on equipment

MILWAUKEE Products

3G Electric supplies MILWAUKEE 3/4" drive impact sockets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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MILWAUKEE Standard Impact Socket: 3/4 in Drive Size, Metric, 41 mm Socket Size, 6-Point, Std (MPN 49-66-6379). Key specifications — attr1215501: MILWAUKEE; attr1215515: Black Phosphate; attr1215518: 41 mm.
MILWAUKEE Standard Impact Socket: 3/4 in Drive Size, Metric, 44 mm Socket Size, 6-Point, Std (MPN 49-66-6382). Key specifications — attr1215501: MILWAUKEE; attr1215515: Black Phosphate; attr1215518: 44 mm.
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MILWAUKEE Standard Impact Socket: 3/4 in Drive Size, Metric, 43 mm Socket Size, 6-Point, Std (MPN 49-66-6381). Key specifications — attr1215501: MILWAUKEE; attr1215515: Black Phosphate; attr1215518: 43 mm.
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MILWAUKEE Standard Impact Socket: 3/4 in Drive Size, Metric, 39 mm Socket Size, 6-Point, Std (MPN 49-66-6377). Key specifications — attr1215501: MILWAUKEE; attr1215515: Black Phosphate; attr1215518: 39 mm.
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MILWAUKEE Standard Impact Socket: 3/4 in Drive Size, Metric, 38 mm Socket Size, 6-Point, Std (MPN 49-66-6376). Key specifications — attr1215501: MILWAUKEE; attr1215515: Black Phosphate; attr1215518: 38 mm.
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MILWAUKEE Deep Impact Socket: 3/4 in Drive Size, SAE, 1 5/16 in Socket Size, 6-Point, Deep, Friction (MPN 49-66-6344). Key specifications — attr1215501: MILWAUKEE; attr1215515: Black Phosphate; attr1215518: 1-5/16 in.
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