Milwaukee Tool 49-57-5543 M8-1.25mm Tap Drill Set 2pc

Product Description

The MILWAUKEE TOOL 49-57-5543 is a 2-piece tap and drill bit set designed for threading M8-1.25mm holes in metal. The set pairs a standard hand plug tap with a matching H drill bit (6.8mm actual diameter), giving technicians and tradespeople everything needed to drill and tap a single metric thread size in one package. Both the tap and drill bit are made from high carbon steel with an oxide coating on the tap for added lubricity and corrosion resistance during threading operations. This set is suited for mechanical, HVAC, plumbing, and electrical tradespeople who regularly tap holes in sheet metal, brackets, and enclosures on the job site or in the shop.

The 49-57-5543 is intended for standard hand tapping applications where an M8-1.25mm thread pitch is required. Typical scenarios include tapping threaded holes in equipment frames, junction boxes, HVAC unit panels, pipe hangers, and similar metal components. The H drill bit establishes the correct pilot hole size before the plug tap cuts the thread. This set is packaged as a single-unit kit, making it a convenient grab-and-go option for field service technicians and shop mechanics alike.

Key Features

• M8-1.25mm plug tap threads right-hand metric holes in one pass
• H drill bit (6.8mm) sized to match M8-1.25mm tap for correct thread engagement
• High carbon steel construction on both tap and drill bit for durability in metal
• Oxide finish on tap reduces friction and extends tap life during hand threading
• Standard hand tap design compatible with common tap handles and T-handles
• 2-piece set eliminates the need to source matching drill and tap separately

Compatibility

Designed for use with standard hand tap handles for right-hand M8-1.25mm threading applications in metal substrates including steel and aluminum.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with hand tapping procedures. Secure the workpiece before drilling the pilot hole, then apply cutting fluid to the tap before threading to reduce wear and prevent tap breakage. Use a tap handle sized for the tap shank and advance the tap in short increments, backing off periodically to clear chips. Follow applicable workplace safety standards and wear appropriate eye protection during drilling and tapping operations.