Osg 1605096127 Thread Forming Tap 9/16-12 Unc Cobalt

Product Description

The OSG 1605096127 is a thread forming tap designed for cold-forming internal threads without cutting, producing stronger threads by displacing material rather than removing it. Built from cobalt high-speed steel and finished with a TiCN (Titanium Carbonitride) coating, this tap handles demanding threading applications in a wide range of metals. It is configured to the 9/16-12 UNC thread standard with a 3B class of fit and an H7 thread limit, delivering precise, tolerance-controlled threads. The modified bottoming chamfer — with 2.5 to 3 chamfered threads — allows threading close to the bottom of blind holes. Coolant-through capability supports high-production environments where heat management is critical. Installed by machinists and tooling professionals in production and job-shop settings.

This tap is suited for both blind hole and through-hole threading operations across a broad material range including aluminum, cast aluminum, carbon steel, alloy steel, die steel, stainless steel, hardened steel, high-nickel alloy, and titanium. It carries material application codes P, M, K, N, and H, covering the majority of common metal families encountered in industrial and precision machining. The EXOPRO XPF-OIL trade name indicates this tap is optimized for use with oil-based cutting fluids to maximize tool life and thread quality.

Key Features

• Cobalt HSS construction provides heat and wear resistance in tough alloys and stainless steel
• TiCN coating reduces friction and extends tool life in abrasive materials
• Modified bottoming chamfer (2.5-3P) enables threading close to blind hole floors
• Coolant-through design supports high-speed, high-production tapping cycles
• Right-hand thread direction, 9/16-12 UNC, 3B class of fit, H7 thread limit
• Compatible with both blind hole and through-hole threading applications

Compatibility

Designed for thread forming in aluminum, cast aluminum, carbon steel, alloy steel, die steel, stainless steel, hardened steel, high-nickel alloy, and titanium workpieces. Suitable for blind hole and through-hole threading in production machining applications under the OSG Series 16050 product family.

Installation Notes

Thread forming taps require a properly sized forming tap drill — consult a forming tap drill chart specific to the 9/16-12 UNC specification, as the required hole diameter differs from a standard cut-tap drill size. Use oil-based cutting fluid as indicated by the EXOPRO XPF-OIL designation to maximize thread quality and tool life. Ensure the workpiece is securely fixtured and the tap is driven with a synchronized tapping head or CNC rigid tapping cycle to maintain accurate thread depth. Engage coolant-through capability when the machine setup supports it, particularly in deep blind hole applications.