Osg 1213401 Spiral Point Tap 10-24 Unc 2 Flute Hss

Product Description

The OSG 1213401 is a spiral point tap designed for cutting 10-24 UNC internal threads in through-hole applications. It features a 2-flute, plug chamfer geometry that pushes chips forward ahead of the cutting action, keeping the flutes clear and allowing consistent thread formation at production feed rates. Built from high-speed steel with a steam oxide coating, this tap handles a wide range of workpiece materials encountered in general machining and maintenance work. Overall length is 2.375 inches with a thread length of 0.54 inches and a shank diameter of 0.194 inches. The H3 thread limit and 2B/3B class of fit make it suitable for standard tolerance threading requirements.

The OSG 1213401 is suited for through-hole tapping in production and job-shop environments. The steam oxide finish provides a degree of lubricity and light corrosion resistance, reducing galling when cutting softer materials. Typical applications include threading in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, and hardened steel. It is used by machinists, maintenance technicians, and toolroom professionals working with manual drill presses, CNC machining centers, and tapping machines requiring a right-hand, non-coolant-through tool in this thread size.

Key Features

• Spiral point geometry pushes chips forward, ideal for through-hole tapping
• High-speed steel construction for durability across a range of workpiece materials
• Steam oxide coating reduces friction and provides light corrosion resistance
• H3 thread limit with 2B/3B class of fit for standard tolerance applications
• Right-hand cut, non-coolant-through design
• Plug chamfer for easy thread starting in through-hole work

Compatibility

Compatible with aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, and hardened steel workpieces. Designed as an OEM-style replacement or standard tooling choice for 10-24 UNC through-hole tapping operations.

Installation Notes

This tap should be installed in a tap holder or collet chuck that provides adequate axial float to prevent thread distortion. Always secure the workpiece and power down or disengage the spindle before changing tooling. Apply an appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Follow applicable shop safety procedures and manufacturer feed-rate recommendations for the machine and material combination.