Osg 1024908 Straight Flute Tap 10-24 Unc Ticn Hss

Product Description

The OSG 1024908 is a straight flute tap designed for cutting internal 10-24 UNC threads in a wide range of metallic workpiece materials. It features four flutes, a plug chamfer style, and a 2B class of fit, making it suited for standard through-hole and blind-hole threading applications where chip evacuation is managed manually or with coolant flushing. The tap is manufactured from high-speed steel (HSS) with a TiCN (Titanium Carbonitride) coating that extends tool life and reduces friction against the workpiece. Overall length is 2-3/8 inches, thread length is 7/8 inches, and shank diameter is 0.194 inches. This is a right-hand thread tool in OSG Series 102 with an H3 thread limit.

The OSG 1024908 is appropriate for production and maintenance tapping in materials including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It is a standard-use tap well suited to machine tapping in drill presses, CNC machining centers, and tapping heads, as well as hand tapping in repair and field service environments. The plug chamfer — typically 3 to 5 threads of lead — helps guide entry and is the most common style used by machinists and maintenance technicians for general-purpose threading.

Key Features

• 10-24 UNC thread form with right-hand cut and H3 thread limit for consistent tolerance control
• TiCN coating improves wear resistance and reduces built-up edge when tapping ferrous and non-ferrous materials
• Plug chamfer provides controlled entry suitable for both through holes and deeper blind holes
• Four straight flutes support chip clearing in low-viscosity coolant or dry tapping environments
• High-speed steel construction provides toughness and regrindability for shop maintenance programs
• 2B class of fit meets standard commercial thread tolerance for most fastener and assembly applications

Compatibility

Designed as a standard OEM-style tapping tool for any machine or hand tapping setup that accepts straight shank taps with a 0.194-inch shank diameter. Compatible material applications include aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel as specified by OSG for this series.

Installation Notes

Secure the tap in an appropriate tap holder, chuck, or tapping head rated for the shank diameter before use. Ensure the workpiece is firmly clamped and the pilot hole diameter is correctly sized for 10-24 UNC threads per applicable machining standards before tapping begins. Apply a suitable cutting fluid or tapping compound for the workpiece material to extend tool life and improve thread quality. When tapping blind holes, monitor depth carefully to avoid bottoming the tap against the hole floor.