Irwin Hanson 80238 3/8"-16 NC Tap and Letter O Drill Bit Combo Set

The Irwin Hanson 80238 is a convenient tap and drill bit combination set designed for creating 3/8"-16 NC (National Coarse) threaded holes. This matched set eliminates the guesswork of selecting the correct drill bit size for your tap, providing the proper Letter O drill bit paired with a 3/8"-16 plug tap.

Key Features:

• High speed steel drill bit ensures fast, precise drilling with excellent durability
• High carbon steel plug tap ideal for general purpose threading applications
• Letter O drill bit (0.316" diameter) provides the correct pilot hole size for 3/8"-16 threads
• Plug tap design suitable for through-holes and blind holes
• Matched set ensures proper thread engagement and strength
• 3/8"-16 NC thread specification - one of the most common coarse thread sizes

This combination set is perfect for automotive repair, machinery maintenance, fabrication work, and general mechanical applications where 3/8"-16 threaded holes are required. The matched components ensure proper threading every time, making it an essential addition to any mechanic's or machinist's toolbox.