Milwaukee Tool 49-57-5527 Tap Drill Set 10-32 Nf

Product Description

The MILWAUKEE TOOL 49-57-5527 is a 2-piece tap and drill set designed for threading 10-32 NF (fine thread) holes in metal. The set pairs a 10-32 NF plug tap with a No. 21 drill bit, giving a technician or tradesperson everything needed to drill and tap a single standard fine-thread size in one package. Both the tap and drill bit are manufactured from high carbon steel with an oxide finish on the tap, which helps resist corrosion and reduces friction during cutting. At 0.04 pounds, this compact set is suited for on-the-job use in tight or confined work areas.

This set is a practical solution for electrical, HVAC, plumbing, and general mechanical work where 10-32 NF threaded fasteners are required. Common applications include tapping enclosures, brackets, sheet metal, and light structural components. The plug tap style is the standard starting point for most through-hole tapping operations and works with a conventional hand tap wrench. It is appropriate for both field service and shop use where threading a No. 21 pilot hole to 10-32 NF specification is needed.

Key Features

• Includes one 10-32 NF plug tap and one No. 21 drill bit — matched pair for correct pilot hole sizing
• High carbon steel construction on both tap and drill bit for durability in ferrous and non-ferrous materials
• Oxide finish on tap reduces friction and provides corrosion resistance
• Standard hand tap type compatible with common tap wrenches
• Right-hand thread direction — standard for the majority of fastener applications
• Compact 2-piece set with no case, keeping it lightweight and easy to carry in a tool pouch

Compatibility

Designed for use with standard hand tap wrenches to cut 10-32 NF threads; the No. 21 drill bit is the correct pilot size for this thread specification.

Installation Notes

This set is intended for use by tradespeople performing hand-tapping operations on metal workpieces. Secure the workpiece firmly before drilling and tapping to prevent movement. Use appropriate cutting fluid when tapping steel to extend tap life and produce cleaner threads. Follow standard NEC or applicable code requirements when tapping enclosures or electrical components, and ensure power is removed from any live equipment before work begins.