Milwaukee Tool 49-57-5156 M11x1.5 Straight Flute Tap

Product Description

The MILWAUKEE TOOL 49-57-5156 is a straight flute tap designed for cutting M11x1.5 internal threads in through-holes and shallow blind holes. Built from high-carbon steel with a black oxide finish, this tap delivers solid wear resistance in ferrous materials during production and maintenance threading operations. The plug chamfer provides a balance between starting ease and thread engagement length, making it well-suited for general-purpose tapping in machine shops, field repair, and equipment maintenance. At 3.25 inches overall length and 0.08 pounds, it fits standard tap holders and T-handle wrenches used daily by machinists and mechanical tradespeople.

This tap is intended for right-hand threading applications where an M11x1.5 metric thread is required. The 4-flute straight flute geometry works best in materials that produce short, brittle chips, such as cast iron, brass, and harder steels. It is suitable for use in manual tapping operations or low-speed machine tapping setups. The Class 2B thread fit tolerance makes it appropriate for standard fastener mating applications across general industrial and mechanical assembly work.

Key Features

• M11x1.5 metric thread size with right-hand thread direction
• Plug chamfer for general-purpose starting and thread engagement
• 4-flute straight flute design suited to short-chip materials
• High-carbon steel construction with black oxide coating for corrosion and wear resistance
• Class 2B thread fit for standard fastener compatibility
• Overall length of 3.25 inches fits common tap holders and T-handle wrenches

Compatibility

Designed as a general-purpose metric straight flute tap compatible with standard tap holders and machines configured for M11x1.5 right-hand threading operations.

Installation Notes

This tap should be installed by a qualified machinist or mechanical tradesperson familiar with threading operations and tooling setup. Always secure the workpiece and ensure the tap is aligned perpendicular to the hole before beginning. Apply appropriate cutting fluid to reduce friction and improve thread quality. Back the tap out periodically to clear chips and prevent tap breakage, particularly in deeper holes.