Osg 2401103 Straight Flute Tap 5-40 Unc Plug Nitride

Product Description

The OSG 2401103 is a straight flute plug tap designed for cutting 5-40 UNC internal threads in a wide range of machining applications. Built from vanadium high-speed steel with a nitride coating, this tap delivers solid wear resistance and extended tool life compared to uncoated HSS alternatives. It features 3 flutes, a plug chamfer for progressive thread engagement, and a right-hand thread direction. Overall length is 1.937 inches with a thread length of 0.299 inches. The H2 thread limit ensures consistent fit tolerances for 2B and 3B class of fit requirements. Licensed machinists and maintenance technicians rely on this tap for precision thread production in production and repair environments.

The OSG 2401103 is suited for threading operations in aluminum and cast iron workpieces. The plug chamfer style makes it appropriate for through-hole tapping where the tap can pass fully through the material. It is part of OSG Series 240 and is commonly used in machine tapping setups including CNC machining centers, drill presses, and tapping machines where consistent 5-40 UNC thread quality is required across production runs or field repair work.

Key Features

• Vanadium high-speed steel construction for improved hardness and wear resistance over standard HSS
• Nitride coating reduces friction and extends tool life in aluminum and cast iron applications
• Plug chamfer allows gradual thread engagement, ideal for through-hole tapping
• H2 thread limit supports 2B and 3B class of fit tolerances
• 3-flute design provides chip clearance and stable cutting action
• Right-hand thread direction for standard tapping operations

Compatibility

Designed for cutting 5-40 UNC internal threads in aluminum and cast iron. Fits standard machine tap holders and tapping heads accepting a 0.141-inch shank diameter. Series 240 designation confirms OSG standard tooling geometry.

Installation Notes

Installation of threaded inserts and tapped holes should be performed by qualified machinists or maintenance technicians familiar with thread cutting practices. Always secure the workpiece firmly and use appropriate cutting fluid for the material being tapped. Ensure the tap is properly aligned with the pilot hole before engagement to prevent tap breakage. Power down or disengage the spindle before loading or removing the tap from the holder.