Irwin Hanson 1225ZR Bottom Tap 8-36 NF Thread

The Irwin Hanson 1225ZR is a high-quality bottom tap designed for cutting 8-36 NF (National Fine) threads. This precision threading tool features a bottom chamfer configuration, making it ideal for threading blind holes all the way to the bottom where through-holes are not available.

Key Features:

• Bottom tap design with minimal chamfer for threading to the bottom of blind holes
• 8-36 NF thread specification for fine-pitch threading applications
• Manufactured from high-quality tool steel for durability and long service life
• Precision ground threads ensure accurate, consistent thread formation
• Suitable for use in a variety of materials including steel, aluminum, and other metals

Bottom taps are essential when threads must extend as close as possible to the bottom of a hole. This tap complements starter and plug taps in a complete tapping sequence, or can be used alone when maximum thread depth is required. The 8-36 NF thread is commonly found in precision instruments, electronics, and applications requiring fine thread pitch.