Milwaukee Tool 49-57-5136 M6 X 1 Straight Flute Tap

Product Description

The MILWAUKEE TOOL 49-57-5136 is a straight flute tap designed for cutting M6 x 1 internal threads in through-holes and blind holes where chip evacuation is managed manually or with coolant. Built from high-carbon steel with a black oxide coating, this tap delivers consistent thread quality in a plug chamfer configuration, which splits the difference between starting ease and thread engagement depth. The 3-flute design and Class 2B fit make it a practical choice for general-purpose threading in ferrous and non-ferrous materials. Machinists, maintenance technicians, and tool-and-die tradespeople use this tap in both production and repair applications.

This tap is suited for use in manual hand-tapping operations as well as low-speed machine tapping setups where straight flute geometry is appropriate. The plug chamfer allows the tap to start easily in a pre-drilled hole and is well-suited for through-hole applications. At 2.5 inches overall length with a thread length of 25.40 mm, this tap fits standard tap wrenches and tapping heads sized for M6 shanks. It is commonly used in light manufacturing, HVAC equipment repair, plumbing fixture work, and general mechanical assembly where metric M6 fastener threads must be cut or chased.

Key Features

• M6 x 1 metric thread size with right-hand thread direction
• Plug chamfer for easy starting and versatile use in through-holes
• 3-flute straight flute design for general-purpose threading
• High-carbon steel construction for durability in standard tapping applications
• Black oxide coating reduces friction and provides mild corrosion resistance
• Class 2B thread fit for standard metric fastener compatibility

Compatibility

Designed as a general-purpose M6 x 1 metric straight flute tap compatible with standard tap wrenches and tapping heads accepting the corresponding shank diameter.

Installation Notes

Always use the correctly sized tap drill for M6 x 1 threads before tapping to avoid tap breakage. Secure the workpiece fully before beginning and apply cutting fluid appropriate for the material being tapped. Reverse the tap periodically during hand tapping to break chips and prevent binding. This tool should only be operated within its rated material and speed range; high-carbon steel taps are not rated for hardened materials.