Osg 2864208 Thread Forming Tap 0-80 Unf Bottoming Ticn

Product Description

The OSG 2864208 is a thread forming tap designed for cutting 0-80 UNF internal threads in blind hole applications. Unlike cutting taps, thread forming taps displace material rather than remove chips, producing stronger threads with a better surface finish. This tap is manufactured from high-speed steel and features a TiCN (titanium carbonitride) coating for improved hardness and wear resistance. It carries a 2B class of fit and a bottoming chamfer with 1.5 to 2 chamfered threads, making it well suited for threading close to the bottom of shallow blind holes. Licensed HVAC, plumbing, and mechanical technicians, as well as machinists and maintenance professionals, use taps like this for precision fastener applications in metal components.

The 2864208 is rated for use in aluminum, cast aluminum, low-carbon steel, and medium-carbon steel. The bottoming chamfer style allows threading to within a minimal distance of the hole bottom, which is critical in tight-clearance assemblies. The right-hand thread direction and standard UNF 0-80 profile make this tap compatible with the most common miniature fastener specifications found in instrumentation, electronics enclosures, and small mechanical assemblies across residential and light commercial applications.

Key Features

• Thread forming (chipless) design produces stronger threads by displacing rather than cutting material
• TiCN coating improves surface hardness and extends tool life in ferrous and non-ferrous materials
• Bottoming chamfer (1.5-2P) enables threading close to the bottom of blind holes
• High-speed steel construction provides durability across rated material applications
• Right-hand, 0-80 UNF thread profile matches standard miniature fastener specifications
• No coolant-through design — suitable for hand tapping and standard machine tapping setups

Compatibility

Designed for blind hole threading in aluminum, cast aluminum, low-carbon steel, and medium-carbon steel workpieces requiring a 0-80 UNF internal thread with a 2B class of fit.

Installation Notes

This tap is installed using a standard tap wrench or machine tapping chuck sized for a 0.1410-inch shank diameter. Ensure the workpiece is securely fixtured before tapping to maintain thread alignment. Apply appropriate cutting fluid for the workpiece material to reduce tool wear and improve thread finish. Because this is a thread forming tap, it requires ductile materials — do not use on brittle materials such as cast iron or hardened steel.