Irwin Hanson 310439 Taper Tap 1-1/8-12 NF Ground Thread

The Irwin Hanson 310439 is a high-quality taper tap designed for creating or repairing 1-1/8 inch-12 NF (National Fine) internal threads. This ground thread tap features a tapered entry that provides gradual cutting action, making it ideal for starting threads in through holes or beginning thread cutting operations.

Key Features:

• Thread size: 1-1/8 inch-12 NF (National Fine thread standard)
• Taper design with 7-10 threads chamfered for easy entry and alignment
• Ground thread construction ensures precise, accurate thread cutting
• Made from high-speed steel for durability and extended tool life
• Suitable for use in a variety of materials including steel, aluminum, and other metals
• Designed for hand tapping or machine operation

This taper tap is part of the Irwin Hanson professional threading tool lineup, engineered to deliver clean, accurate threads for automotive, industrial, and general machining applications. The ground thread design provides superior thread finish compared to cut thread taps, making it an excellent choice for precision work.