Techniks 05510-367 ER25 Tap Collet 0.367 Inch

Product Description

The TECHNIKS 05510-367 is an ER25 tap collet designed to hold and drive taps in CNC machining centers, knee mills, and tapping heads. With a decimal size of 0.367 inches and a square drive size of 0.275 inches, this collet is matched to 1/2 inch hand taps. It provides secure, concentric tap holding within the ER25 collet system, reducing tap breakage and improving thread quality. Machinists and toolroom professionals install this collet into compatible ER25 tap holders as part of a rigid or floating tapping setup. It does not support through-coolant or tension-compression operation.

This collet is suited for hand tap applications in general metalworking, production machining, and job shop environments. It is used in vertical machining centers, drill presses with tapping attachments, and manual mills where ER25 toolholding is already in use. The 0.367 inch bore accommodates 1/2 inch hand taps with the appropriate square drive engagement. It is not intended for pipe taps or tension-style tapping cycles.

Key Features

• ER25 collet series for broad compatibility with ER25 tap holders and chucks
• 0.367 inch decimal bore sized for 1/2 inch hand taps
• 0.275 inch square drive size for positive tap engagement
• Hand tap configuration - not rated for tension-compression tapping
• No through-coolant passages, suitable for dry or flood-external coolant setups

Compatibility

Designed as an OEM-style replacement and standard tooling component for ER25 tap holder systems accepting 0.367 inch collets for 1/2 inch hand taps.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians familiar with ER collet systems. Power down and lock out the spindle before changing collets. Use the appropriate ER25 collet nut and spanner wrench to seat and torque the collet nut to the tool holder manufacturer specification. Inspect the collet bore and the tap shank for chips or damage before assembly.