Hertel G837592-1 Extension Tap 10-32 Unf Hss Spiral Point

Product Description

The HERTEL G837592-1 is a spiral point plug extension tap designed for threading 10-32 UNF holes in metalworking and machine shop applications. Built from high speed steel (HSS) with a bright, uncoated finish, this tap is suited for general-purpose tapping where cutting fluid application provides the necessary lubrication. The spiral point design pushes chips forward ahead of the tap rather than backing them into the flute, making it effective for through-hole threading operations. With an overall length of 4 inches and an H3 thread limit, it holds tight tolerances appropriate for 2B and 3B class of fit applications. Two flutes keep the tool profile compact in confined threading situations.

This tap is used in production and maintenance machining environments where 10-32 UNF internal threads are required. Common applications include threading holes in aluminum, mild steel, brass, and similar machinable materials. The extension length makes it suitable for reaching into recessed areas or deep fixtures where a standard-length tap would not provide adequate clearance. Machinists, tool and die makers, and maintenance technicians working in manufacturing, HVAC equipment assembly, and general fabrication shops regularly use this type of tap.

Key Features

• Spiral point geometry pushes chips forward, suited for through-hole tapping
• High speed steel construction for durability across a wide range of machinable metals
• Bright uncoated finish compatible with most cutting fluids and oils
• H3 thread limit maintains tolerance for 2B and 3B class of fit threads
• 4 inch overall length provides reach into recessed or deep fixture locations
• Plug chamfer style for standard entry and thread starting

Compatibility

Designed for cutting 10-32 UNF internal threads in through-hole applications where a spiral point plug tap with an H3 thread limit and 2B or 3B class of fit is specified.

Installation Notes

This tap should be installed in a compatible tap holder, tapping head, or CNC rigid tapping chuck rated for the shank diameter. Always apply an appropriate cutting fluid or tapping oil before and during the tapping operation to extend tool life and improve thread quality. Secure the workpiece firmly before tapping to prevent movement. Inspect the tap for chipping or wear before each use, as a damaged tap can produce out-of-tolerance threads or break in the hole.