Osg 1210000 Spiral Point Tap 0-80 Unf 2 Flute Hss

Product Description

The OSG 1210000 is a spiral point plug tap designed for cutting internal threads in a wide range of metals. It produces a 0-80 UNF thread profile using a 2-flute, right-hand spiral point geometry that pushes chips forward ahead of the cutting edge rather than packing them into the flute. The tap is manufactured from high-speed steel with a bright finish and carries a H3 thread limit for controlled tolerance output. Overall length is 1.625 inches with a thread length of 0.35 inches (5/16 inches). Shank diameter is 0.141 inches. This is a Series 105 tap intended for use by machinists and trade professionals in precision threading applications.

This tap is suited for threading 0-80 UNF holes in a broad range of workpiece materials including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, and hardened steel. The plug chamfer style makes it appropriate for through-hole applications where the tap can advance fully through the material. It is commonly used in precision machining, maintenance and repair operations, and light manufacturing environments where fine-thread fastener systems are specified.

Key Features

• 0-80 UNF thread form with right-hand thread direction
• Spiral point geometry pushes chips forward, reducing clogging in through-hole applications
• H3 thread limit for consistent, controlled tolerance threading
• High-speed steel construction handles a wide range of ferrous and non-ferrous materials
• Bright finish with no coating - suitable for use with cutting fluid where required
• Plug chamfer style for through-hole threading

Compatibility

Designed for use in standard tap handles, T-handle wrenches, and CNC tapping attachments that accept a 0.141-inch shank diameter. Compatible with workpiece materials including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, and hardened steel as specified by the manufacturer.

Installation Notes

This tap should be installed by a qualified machinist or trade professional using an appropriately sized tap wrench or machine tapping attachment. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill size for a 0-80 UNF thread before tapping. Apply a suitable cutting fluid for the workpiece material to extend tool life and improve thread quality. Coolant-through is not supported on this tap.