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MILWAUKEE #4-40 UNC General Purpose Hand Tap - General Purpose Hand Taps
MILWAUKEEGeneral Purpose Hand Taps

MILWAUKEE #4-40 UNC General Purpose Hand Tap

The MILWAUKEE Straight Flute Tap is a #4-40 UNC general purpose hand tap, featuring a 2B thread class, plug chamfer, and black oxide carbon steel construction with 4 flutes (MPN 49-57-5108). 3G Electric interprets…

SKU 3G-OTH-221542

Also listed as: 49575108 · 49 57 5108

Brand
MILWAUKEE
Item
#4-40 UNC General Purpose Hand Tap
Category
General Purpose Hand Taps
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Technical Specifications

MILWAUKEE
Manufacturer Part Number
49-57-5108
Type
2B, Plug Chamfer, Black Oxide Carbon Steel
Flute
4

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MILWAUKEE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MILWAUKEE Straight Flute Tap is a #4-40 UNC general purpose hand tap, featuring a 2B thread class, plug chamfer, and black oxide carbon steel construction with 4 flutes (MPN 49-57-5108). 3G Electric interprets your demand for this OEM-specified tool and delivers it across 14 industrial departments, with specialist depth in combustion, pumps, and controls as an authorized distributor.

Frequently Asked Questions

What is the MILWAUKEE Straight Flute Tap #4-40 UNC used for?

This MILWAUKEE tap is used for cutting internal threads in carbon steel and other materials. It is a general purpose hand tap with a #4-40 UNC thread size, 2B tolerance, 4 flutes, and a plug chamfer, ideal for through-hole or blind-hole threading in maintenance and production work.

What are the specifications of the MILWAUKEE 49-57-5108 tap?

The MILWAUKEE 49-57-5108 is a straight flute tap with #4-40 UNC thread, 2B class of fit, 4 flutes, and a plug chamfer. It is made from black oxide carbon steel. The manufacturer part number is 49-57-5108. This tap is designed for general purpose hand threading applications.

Where to buy MILWAUKEE 49-57-5108 taps worldwide?

You can source the MILWAUKEE 49-57-5108 tap through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this and other MILWAUKEE threading tools.

How to select the correct tap for #4-40 UNC threads?

For #4-40 UNC threads, select a tap with the correct thread pitch (40 threads per inch) and class of fit (2B for standard tolerance). A plug chamfer, as on this MILWAUKEE tap, works for both through and blind holes. Ensure the tap material matches the workpiece—carbon steel for general use.

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 general purpose hand taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
MILWAUKEE Straight Flute Tap: #4-36 UNS, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5107)
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MILWAUKEE Straight Flute Tap: #4-36 UNS, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5107)
MILWAUKEE Straight Flute Tap: 1/4"-20 UNC, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5134)
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MILWAUKEE Straight Flute Tap: 1/4"-20 UNC, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5134)
MILWAUKEE Straight Flute Tap: #10-24 UNC, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5125)
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MILWAUKEE Straight Flute Tap: #10-24 UNC, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5125)
MILWAUKEE Straight Flute Tap: #6-32 UNC, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5115)
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MILWAUKEE Straight Flute Tap: #6-32 UNC, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5115)
MILWAUKEE Straight Flute Tap: 5/16"-18 UNC, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5142)
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MILWAUKEE Straight Flute Tap: 5/16"-18 UNC, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5142)
MILWAUKEE Straight Flute Tap: 3/4"-10 UNC, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5176)
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MILWAUKEE Straight Flute Tap: 3/4"-10 UNC, 2B, 4 Flute, Plug Chamfer, Black Oxide Carbon Steel (MPN 49-57-5176)

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