Osg 1024905 Straight Flute Tap 10-24 Unc Hss Tin

Product Description

The OSG 1024905 is a straight flute plug tap designed for cutting internal 10-24 UNC threads in a wide range of ferrous and non-ferrous materials. Built from high-speed steel (HSS) with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction compared to uncoated taps. The plug chamfer configuration distributes cutting load across the first few threads, making it well suited for through-hole applications. With 4 flutes and a right-hand thread direction, the 1024905 produces clean, accurate 2B class fits in production and maintenance settings. Overall length is 2.375 inches with a thread length of 0.875 inches.

This tap is intended for threading operations in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It is appropriate for both manual tapping and machine tapping setups in job shop, production machining, and MRO maintenance environments. The H3 thread limit provides a reliable tolerance range for standard 2B fit assemblies. The Series 102 designation identifies it within the OSG standard tap product line.

Key Features

• High-speed steel construction with TiN coating for improved wear resistance and longer tool life
• Plug chamfer distributes cutting load gradually — suited for through-hole tapping
• 4 flutes provide stable chip formation in the listed material applications
• H3 thread limit ensures consistent 2B class of fit
• Right-hand thread, straight flute design compatible with standard tapping heads and tap handles
• No coolant-through requirement simplifies setup in general-purpose machines

Compatibility

Designed for use in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. Fits standard tap holders accepting a 0.194-inch shank diameter with a 0.152-inch square drive.

Installation Notes

This tap should be installed by a machinist or maintenance technician familiar with tapping operations. Ensure the workpiece is properly secured and the tap is aligned perpendicular to the hole before starting. Apply appropriate cutting fluid for the material being tapped to reduce heat buildup and extend tool life. When using a tapping machine or drill press, verify spindle speed is appropriate for the material and tap diameter before starting the cut.