Convenient combo pack includes a 10-32 National Fine plug tap and matching #21 wire gauge drill bit for creating threaded holes in one purchase.

• High carbon steel plug tap - heat treated and tempered for file-hard threads
• HSS (high speed steel) drill bit with 135-degree split point
• Plug-style tap with 3-5 threads chamfered for easy starting
• Straight flute design for hand tapping in aluminum, mild steel, cast iron, wood, and plastic
• 10-32 NF (National Fine) thread - finer pitch provides stronger hold in thin materials and precision assemblies
• Use with a T-handle tap wrench for best results