Osg 1400120208 Thread Forming Tap 10-32 Unf Cobalt Ticn

Product Description

The OSG 1400120208 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads in ductile and malleable metals without cutting or removing material. Unlike cutting taps, thread forming taps displace material to produce stronger, work-hardened threads. This tap is configured for 10-32 UNF right-hand threads with a modified bottoming chamfer of 2 to 2.5 threads, making it well-suited for threading close to the bottom of blind holes. It is manufactured from cobalt high-speed steel and finished with a TiCN coating for added surface hardness and wear resistance. Machinists and tool-and-die professionals install this tap in CNC machining centers, drill presses, and tapping machines.

This tap is used in blind hole threading applications across a range of ferrous and non-ferrous materials including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The modified bottoming chamfer provides more thread engagement near the bottom of a blind hole than a standard bottoming tap, offering flexibility in tight-depth applications. It is appropriate for production environments and job shop work where thread quality and tap life are priorities in small-diameter threading operations.

Key Features

• Thread forming design cold-forms threads for increased thread strength and eliminates chip evacuation concerns
• Cobalt HSS construction provides elevated heat and wear resistance compared to standard M2 HSS
• TiCN coating increases surface hardness and reduces friction for extended tool life
• Modified bottoming chamfer (2 to 2.5 threads) allows threading closer to the bottom of blind holes
• H2 thread limit provides tight tolerance control suitable for precision threaded assemblies
• Compatible with alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel

Compatibility

Designed for blind hole threading in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces where a 10-32 UNF internal thread form is required. Material application codes P and N confirm suitability for steel and non-ferrous material groups.

Installation Notes

Thread forming taps require a specific forming tap drill size, which is larger than the drill size used for cutting taps of the same thread designation — consult the tap manufacturer drill chart before machining the pilot hole. Use a tapping fluid or cutting oil appropriate for the workpiece material to reduce forming forces and extend tap life. Secure the workpiece and ensure the tap is aligned perpendicular to the surface before beginning the tapping cycle. Do not use this tap in brittle materials such as cast iron, where thread forming is not applicable.