Osg 1653502708 Spiral Point Tap 5/16-24 3 Flute Ticn

Product Description

The OSG 1653502708 is a spiral point tap in the EXOTAP VC-10 series, designed for cutting right-hand internal threads in through-hole applications. It features a 5/16-24 thread size with a plug chamfer and 3 flutes, manufactured from powdered metal high-speed steel (HSS) with a TiCN coating for improved wear resistance and heat tolerance. The tap carries an H4 thread limit and a 2B class of fit, making it suited for standard tolerance threaded fastener applications. Overall length is 5.96 inches with a thread length of 0.83 inches and a shank diameter of 0.318 inches. Machinists and maintenance technicians install this tap in CNC machining centers, drill presses, and tapping machines.

This tap is appropriate for through-hole tapping operations across a wide range of workpiece materials including low-carbon steel, medium-carbon steel, high-carbon steel, alloy steel, hardened steel, die steel, cast iron, stainless steel, aluminum, and cast aluminum. The spiral point geometry pushes chips forward ahead of the tap, making it most effective in through-hole applications where chip evacuation in front of the cutting zone is possible. It is well suited for production environments where consistent thread quality and tool life are priorities.

Key Features

• Spiral point geometry for through-hole tapping with forward chip evacuation
• TiCN coating improves surface hardness and extends tool life in ferrous and non-ferrous materials
• Powdered metal HSS substrate provides a finer grain structure and increased toughness over conventional HSS
• H4 thread limit and 2B class of fit for standard tolerance threaded holes
• Plug chamfer (3-5 thread lead) for general-purpose through-hole starting
• Right-hand thread direction; no coolant-through feature

Compatibility

Designed as an OEM-style cutting tool for use in standard 5/16-24 through-hole tapping applications across compatible tapping machines, CNC machining centers, and hand-tapping setups with the appropriate tap holder for the shank size.

Installation Notes

Installation is performed by qualified machinists or maintenance technicians. Secure the tap in a floating tap holder or rigid holder appropriate for the shank diameter before use, and verify spindle speed and feed rate match the material being tapped. Always apply a cutting fluid or tapping compound suited to the workpiece material to reduce friction and improve thread finish. Inspect the tap for chipping or wear before each use and replace if the cutting edges show visible damage.