Techniks 05808-255 ER32 Tap Collet 0.255 Inch

Product Description

The TECHNIKS 05808-255 is an ER32 tap collet designed to hold 1/4 inch hand taps in ER32 collet chucks on milling machines, machining centers, and tapping heads. With a decimal inch size of 0.255 inches and a square drive size of 0.191 inches, this collet provides the precise fit needed to transmit torque to the tap without slippage. It is intended for rigid or floating tapping setups where a standard ER32 collet chuck is already in use. Machinists and toolroom technicians install this collet as part of a tapping system when threading operations are performed on CNC or manual equipment.

This collet is suited for hand tap applications in production and job-shop environments where ER32 tooling is the standard. It does not support through-coolant delivery or tension-compression tapping - it is a direct-drive tap holding solution. Typical use cases include threading operations on ferrous and non-ferrous materials using standard 1/4 inch hand taps held in an ER32-compatible chuck body.

Key Features

• ER32 collet series for broad compatibility with ER32 chuck bodies
• 0.255 inch decimal bore size sized for 1/4 inch hand taps
• 0.191 inch square drive size for positive torque transmission to the tap shank
• Hand tap configuration - no tension-compression or through-coolant required
• Sold individually (quantity of 1)

Compatibility

Designed for use with ER32 collet chucks that accept standard ER-series tap collets. Fits 1/4 inch hand taps with a square drive shank. Compatible chuck bodies must conform to ER32 collet seat specifications.

Installation Notes

Installation is performed by toolroom machinists or CNC setup technicians. Power down and lock out the spindle before changing collets. Seat the collet fully into the ER32 chuck nut before threading onto the chuck body, and tighten using an ER collet wrench to the chuck manufacturer's specified procedure. Inspect the collet bore and square pocket for wear or chip contamination before each use.