Osg 1736908 Spiral Point Tap 5/16-24 Unf Ticn Coated

Product Description

The OSG 1736908 is a spiral point plug tap designed for cutting right-hand internal threads in a 5/16-24 UNF thread form. Built from vanadium high speed steel (HSS-E) and finished with a TiCN coating, this tap handles demanding materials including hardened steel, low-carbon steel, medium-carbon steel, and stainless steel. The spiral point geometry pushes chips forward ahead of the cutting zone, making it well suited for through-hole tapping operations. With an H4 thread limit and a 2B class of fit, it produces accurate threads that meet standard fastener assembly tolerances. Three flutes provide chip clearance and cutting efficiency in a compact tool profile.

This tap is used in metalworking and machining applications across industrial maintenance, fabrication shops, and precision manufacturing environments. It is appropriate for through-hole tapping in ferrous and stainless materials where chip evacuation must be controlled. The TiCN coating extends tool life in abrasive and harder-grade materials. Machinists, tool and die makers, and maintenance mechanics commonly use this style of tap in drill press, CNC, or hand-tapping setups when working with 5/16-24 UNF fastener bores.

Key Features

• 5/16-24 UNF thread form with right-hand cutting direction
• Vanadium high speed steel (HSS-E) construction for toughness and wear resistance
• TiCN coating for extended tool life in hardened and stainless steel applications
• Spiral point geometry pushes chips forward — optimized for through-hole tapping
• H4 thread limit with 2B class of fit for standard fastener assembly tolerances
• 3 flutes for efficient chip clearance and consistent thread formation

Compatibility

Designed for through-hole tapping of 5/16-24 UNF threads in hardened steel, low-carbon steel, medium-carbon steel, and stainless steel workpieces. Not rated for coolant-through application.

Installation Notes

This tap should be installed in a tap wrench, drill press chuck, or CNC tapping holder appropriate for the shank diameter. Power down and secure the workpiece before starting any tapping operation. Use a cutting fluid or tapping compound compatible with the workpiece material to reduce friction and heat buildup. Follow standard shop practices and applicable safety guidelines when operating rotary cutting tools.