MILWAUKEE Straight Flute Tap: 1/4"-28 UNF, 2B, 4 Flute, Plug Chamfer
The MILWAUKEE Straight Flute Tap (1/4"-28 UNF) is a general-purpose hand tap with a 2B thread class, 4-flute design, plug chamfer, and black oxide carbon steel construction (MPN 49-57-5138). 3G Electric interprets…
SKU 3G-OTH-221561
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Product Description
The MILWAUKEE Straight Flute Tap (1/4"-28 UNF) is a general-purpose hand tap with a 2B thread class, 4-flute design, plug chamfer, and black oxide carbon steel construction (MPN 49-57-5138). 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 a trust anchor, not a limit.
Frequently Asked Questions
What is a MILWAUKEE 1/4"-28 UNF straight flute tap used for?
This MILWAUKEE straight flute tap is used for cutting internal threads in metal parts. The 1/4"-28 UNF size with a 2B tolerance and plug chamfer is ideal for general-purpose hand threading in maintenance, repair, and production applications across industrial sectors.
What are the specifications of the MILWAUKEE 49-57-5138 tap?
The MILWAUKEE 49-57-5138 is a 1/4"-28 UNF straight flute tap with a 2B thread class, 4 flutes, plug chamfer, and black oxide carbon steel construction. It is designed for general-purpose hand tapping in ferrous and non-ferrous materials.
Where to buy MILWAUKEE taps in worldwide?
3G Electric supplies MILWAUKEE taps to customers worldwide. We handle full logistics, customs clearance, and delivery for international orders. Contact our team for a quote on the 49-57-5138 or other MILWAUKEE tooling, and we will source and deliver to your location.
How to select the right tap for a 1/4"-28 UNF thread?
For a 1/4"-28 UNF thread, select a tap with the correct thread pitch (28 TPI) and class of fit (2B for standard tolerance). A plug chamfer is suitable for through holes or blind holes with sufficient depth. Use a tap handle and cutting fluid for best results.
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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.















