Osg 1651500708 Spiral Point Tap 6-40 Unf Ticn

Product Description

The OSG 1651500708 is a spiral point tap designed for threading 6-40 UNF holes in a wide range of ferrous and non-ferrous materials. Built from powdered metal (grade PMT15) and finished with a TiCN coating, it delivers extended tool life in demanding production environments. The plug chamfer style makes it well suited for through-hole threading applications where chips are pushed ahead of the cutting edge. With a 2B class of fit and H2 thread limit, it produces threads that meet standard UNF tolerance requirements. Licensed machinists and precision CNC operators are the primary users of this tap.

This tap is used in machine shop and manufacturing environments where 6-40 UNF internal threads are required. It handles a broad range of workpiece materials including alloy steel, aluminum, cast aluminum, cast iron, hardened steel, high-carbon steel, low-carbon steel, medium-carbon steel, stainless steel, and die steel. The 3-flute geometry and spiral point design promote efficient chip evacuation in through-hole applications, making it a practical choice for production tapping on CNC machining centers or drill presses with tapping attachments.

Key Features

• 6-40 UNF thread form with 2B class of fit and H2 thread limit for standard tolerance threading
• Powdered metal (PMT15) construction for improved wear resistance over standard HSS
• TiCN coating reduces friction and extends tool life in steel and stainless applications
• Plug chamfer style designed for through-hole tapping with forward chip ejection
• 3-flute spiral point geometry promotes chip flow ahead of the tap in through-holes
• Right-hand thread direction; no coolant-through feature

Compatibility

Designed for cutting 6-40 UNF internal threads in through-hole applications across alloy steel, aluminum, cast aluminum, cast iron, hardened steel, high-carbon steel, low-carbon steel, medium-carbon steel, stainless steel, and die steel workpieces.

Installation Notes

Installation and use of this tap should be performed by a qualified machinist or tooling technician. Always secure the workpiece and ensure the spindle is aligned with the pre-drilled pilot hole before engaging the tap. Power down or lock out the machine before changing tooling. Use appropriate cutting fluid for the workpiece material to reduce heat buildup and extend tool life.