Irwin Hanson 316444 Bottom Tap 1-1/2"-6 NC HSS

The Irwin Hanson 316444 is a high-speed steel bottom tap designed for threading 1-1/2 inch diameter holes with 6 threads per inch in the National Coarse (NC) thread standard. Bottom taps feature a full thread profile that extends nearly to the end of the tap, allowing you to cut threads to the bottom of blind holes where through-holes are not possible.

Key Features:

• High-speed steel construction for durability and long tool life
• 1-1/2"-6 NC thread specification for standard coarse threading applications
• Bottom tap design reaches nearly to the bottom of blind holes
• Precision ground threads ensure accurate, consistent thread cutting
• Suitable for use in steel, aluminum, and other metals

This tap is ideal for maintenance, repair, and manufacturing applications where precise internal threading is required in blind hole configurations. Part of the trusted Irwin Hanson line of professional-grade threading tools.