Osg 1400111308 Thread Forming Tap 6-32 Unc Plug Ticn

Product Description

The OSG 1400111308 is a thread forming tap designed for cold-forming internal threads in ductile materials without cutting or producing chips. Built from cobalt high-speed steel and finished with a TiCN coating, this tap delivers improved wear resistance and heat tolerance compared to standard HSS taps. It is configured with a plug chamfer featuring 4 to 4.5 chamfered threads, a thread limit of H3, and a class of fit of 3B. The overall length is 2 inches with a shank diameter of 0.141 inches. This tap is used in machine-shop, maintenance, and production environments by machinists, tool-and-die specialists, and industrial MRO technicians working in through-hole threading applications.

The 1400111308 is engineered for through-hole threading in a broad range of metallic workpiece materials, including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The 6-32 UNC thread form makes it a standard choice for fastener tapping in precision assemblies, electrical enclosures, and light-gauge structural components. Its right-hand thread direction aligns with conventional tapping workflows on CNC machining centers, drill presses, and hand-tapping fixtures. The HY-PRO NRT series from OSG is designed specifically for form tapping, where material is displaced rather than removed, resulting in stronger thread geometry and longer thread life in production runs.

Key Features

• Cobalt construction provides increased red hardness and performance in difficult-to-machine materials including hardened steel and stainless steel
• TiCN coating reduces friction and extends tool life in abrasive and heat-generating applications
• Plug chamfer with 4 to 4.5 chamfered threads suits general through-hole tapping in a range of material thicknesses
• H3 thread limit with 3B class of fit delivers consistent thread tolerance for standard fastener engagement
• Form tapping design produces no chips, reducing tap breakage risk and eliminating chip-clearing interruptions
• Right-hand thread direction compatible with standard tapping attachments and synchronous tapping cycles

Compatibility

Designed for through-hole thread forming in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Material application codes P and N indicate suitability for steel and non-ferrous metal groups per ISO material classification. Verify machine spindle compatibility and tap holder chuck size against the 0.141-inch shank diameter before installation.

Installation Notes

Thread forming taps require a properly sized form-tap drill hole, which is larger than a standard cut-tap drill — consult OSG or published NRT drill charts for the correct pilot hole diameter for 6-32 UNC form tapping. Ensure the workpiece is securely fixtured and use a suitable tapping fluid rated for the workpiece material, particularly when working in stainless steel or hardened steel. A synchronous tapping cycle or floating tap holder is recommended on CNC equipment to prevent thread distortion. Inspect the tap for wear or coating degradation regularly, as premature failure in hardened materials can result in tap breakage and workpiece loss.