Hertel K014579AS Spiral Point Tap 3/8-24 Unf Hss Plug

Product Description

The HERTEL K014579AS is a spiral point tap designed for threading 3/8-24 UNF holes in metal workpieces. The spiral point geometry pushes chips forward ahead of the cutting zone, making it well suited for through-hole tapping operations where chip evacuation matters. Built from high-speed steel with a bright uncoated finish, this tap carries an H11 thread limit and is specified as oversize by 0.0050 inches to account for material springback. It runs right-hand thread direction with a plug chamfer, providing a balanced entry suitable for general-purpose machine or hand tapping in production and maintenance environments.

This tap is used wherever 3/8-24 UNF internal threads are required, including automotive, hydraulic, pneumatic, and general industrial assembly applications. The plug chamfer style works across a wide range of materials and is the standard choice for most through-hole threading tasks on CNC machining centers, drill presses, and tapping arms. Machinists and maintenance technicians in manufacturing, tool-and-die, and MRO environments are the primary users of this tool.

Key Features

• Spiral point geometry pushes chips forward for clean through-hole threading
• 3/8-24 UNF thread size with right-hand thread direction
• Plug chamfer for general-purpose entry and versatile material compatibility
• High-speed steel construction for durability across common engineering materials
• H11 thread limit with 0.0050-inch oversize specification for controlled fit
• Bright uncoated finish — no coolant-through requirement

Compatibility

Designed as a standard replacement or production tap for applications requiring 3/8-24 UNF right-hand internal threads in through-hole configurations across general industrial and maintenance use.

Installation Notes

This tap should be installed in a properly sized tap holder or collet chuck to maintain axial alignment during operation. Ensure the workpiece is securely fixtured and the correct tap drill size for 3/8-24 UNF is used prior to tapping. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Do not force the tap if resistance increases — back off periodically to break and clear chips even with the spiral point design.