Osg 1024900 Straight Flute Tap 10-24 Unc 4 Flutes Hss

Product Description

The OSG 1024900 is a straight flute plug tap designed for cutting internal threads to a 10-24 UNC specification in a wide range of ferrous and non-ferrous materials. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap delivers reliable thread-cutting performance in production and maintenance environments. It features 4 flutes, an H3 thread limit for controlled fit, and a right-hand thread direction. Overall length is 2-3/8 inches with a thread length of 7/8 inches. The plug chamfer style makes it suitable for through-hole and moderately deep blind-hole applications. This tap is used by machinists, maintenance technicians, and trade professionals requiring consistent 2B and 3B class of fit results.

The OSG 1024900 is well suited for tapping operations in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It fits standard tapping applications in HVAC equipment fabrication, electrical enclosure assembly, plumbing fixture manufacturing, and general metalworking. The plug chamfer allows the tap to start easily in a pre-drilled hole and is appropriate for both hand tapping and machine tapping setups where chip clearance is managed by the operator.

Key Features

• 10-24 UNC thread form with right-hand direction for standard inch-series threading
• 4 straight flutes suitable for through-hole and shallow blind-hole applications
• Plug chamfer provides easy entry and balanced cutting across a range of hole depths
• H3 thread limit ensures consistent 2B and 3B class of fit tolerances
• High-speed steel construction with bright, uncoated finish for general-purpose use
• Compatible material applications include aluminum, cast iron, and low- to high-carbon steel

Compatibility

Designed for use in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. Suitable for standard hand and machine tapping setups requiring 10-24 UNC internal threads at 2B or 3B class of fit.

Installation Notes

Tapping operations should be performed by a qualified machinist or trained technician. Always use the correct tap drill size for a 10-24 UNC thread before starting the tap. Apply cutting fluid appropriate for the workpiece material to reduce friction and extend tool life. Secure the workpiece fully before tapping, and back the tap off periodically to break chips when working in deeper holes.