Milwaukee Tool 49-57-5147 Straight Flute Tap M8x1

Product Description

The MILWAUKEE TOOL 49-57-5147 is a straight flute tap designed for cutting right-hand metric threads in through-holes and open-ended workpieces. It produces M8x1 internal threads with a plug chamfer that eases entry while distributing cutting load across several leading threads. The tap is machined from high-carbon steel and finished with a black oxide coating that provides mild corrosion resistance and reduces friction during cutting. With four flutes, a class of fit 2B, and an overall length of 2.75 inches, this tap is suited for use in machining, fabrication, and maintenance environments. It is installed by licensed machinists, tool-and-die technicians, and skilled tradespeople.

This tap is intended for tapping M8x1 metric threads in ferrous and non-ferrous materials where chip evacuation is not a primary concern. The straight flute geometry is best suited for through-holes where chips can fall away freely. It fits standard tap handles and machine tap holders with an appropriate square-drive shank. Typical applications include threading bolt holes in metal fixtures, machinery components, and fabricated assemblies. This is a single-tap package with a minimum order quantity of one.

Key Features

• M8x1 metric thread size with right-hand thread direction
• Plug chamfer distributes cutting load across entry threads for controlled starts
• Four-flute straight design suited for through-hole tapping in a wide range of metals
• High-carbon steel construction provides durability in general-purpose tapping applications
• Black oxide finish reduces friction and provides mild corrosion protection
• Class of fit 2B meets standard metric thread tolerance requirements

Compatibility

Designed as a general-purpose straight flute tap compatible with standard tap handles and machine tap holders sized for the corresponding shank diameter.

Installation Notes

This tap is used by machinists and tradespeople working with hand tap handles or tapping machines. Ensure the workpiece is securely clamped and a properly sized pilot hole is drilled before starting. Apply cutting fluid appropriate for the workpiece material to extend tap life and reduce the risk of breakage. Replace worn or damaged taps rather than forcing them, as high-carbon steel taps are more susceptible to breakage under excessive torque than high-speed steel alternatives.