Balax 35605-000 Extension Tap H5 Spiral Flute 6 in

Product Description

The BALAX 35605-000 is a spiral flute extension tap designed for threading operations that require extended reach in confined or deep-hole applications. With a 6-inch overall length and a 3-flute spiral flute geometry, this tap is built to pull chips up and out of the hole during tapping, reducing the risk of chip packing and thread damage. The H5 thread limit designation indicates a tighter tolerance class, making it appropriate for precision threading work where fit and finish matter. Machinists and tool-and-die professionals will find this tap suited for both CNC and manual tapping setups.

This extension tap is used in metalworking and machining environments where standard-length taps cannot reach the workpiece or where clearance above the hole is restricted. The spiral flute design makes it particularly effective in blind holes, where chip evacuation is critical to thread quality. Typical applications include production machining, job shop work, and maintenance operations across automotive, aerospace, and general manufacturing settings.

Key Features

• Spiral flute geometry actively pulls chips out of the hole during tapping, reducing chip packing in blind hole applications
• H5 thread limit for precision tolerance control on threaded fits
• 6-inch overall length provides extended reach for deep or obstructed workpiece access
• 3-flute configuration balances chip clearance and cutting edge strength
• Standard shank (no reduced shank) for direct chuck or tap holder mounting

Compatibility

Designed as an OEM-style replacement or direct-fit addition for standard tap holders and tapping chucks used in metalworking and machining applications requiring spiral flute extension taps with an H5 thread limit.

Installation Notes

This tap should be installed by a qualified machinist using a compatible tap holder or chuck rated for the tap shank size. Ensure the workpiece is securely fixtured and the spindle is properly aligned before beginning the tapping cycle. Apply appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Inspect the tap for wear or damage before each use, as a damaged tap can destroy threads or break off in the workpiece.