Irwin Hanson 1445 Plug Tap 1/2-20 NF High Carbon Steel

The Irwin Hanson 1445 is a high-quality plug tap designed for cutting 1/2"-20 NF (National Fine) internal threads. Constructed from high carbon steel, this tap is ideal for hand tapping applications across a wide range of materials.

Key Features:

• Precision ground straight flutes provide rapid chip removal for efficient threading performance
• Produces a Class 2B thread tolerance, suitable for most general-purpose applications
• 3 to 5 threads chamfered for the most common plug tap configuration
• Tap size and recommended drill bit size are etched on the tool for easy identification
• High carbon steel construction optimized for hand tapping operations
• Made in USA with Hanson's trusted quality standards

Applications:

• General-purpose threading in maintenance and repair work
• Re-threading applications where extreme precision is not critical
• Tough threading jobs in steel, aluminum, and other metals
• Ideal for creating threads in through holes and moderately deep blind holes

The plug tap design features a moderate chamfer length, making it the most versatile choice for general threading work. It can start threads in open holes while also being capable of threading deeper than a taper tap. This 1/2"-20 NF thread size is commonly used in automotive, machinery, and industrial applications requiring fine thread pitch for better holding power and vibration resistance.