Techniks 05410-255 ER20 Tap Collet 0.255 Inch

Product Description

The TECHNIKS 05410-255 is an ER20 tap collet designed to hold and drive hand taps in CNC machining centers, tapping heads, and manual milling setups. With a collet size of 0.255 inches and a square drive size of 0.191 inches, it is sized specifically for 1/4 inch hand taps. The ER20 series collet fits standard ER20 collet chucks, providing secure, concentric clamping during tapping operations. This collet is installed and serviced by machinists and tool and die professionals working in production or job-shop environments.

This collet is intended for use with 1/4 inch hand taps in ER20 collet chuck systems. It is suited for ferrous and non-ferrous tapping applications where a rigid, precise tap hold is required. The collet does not support through-coolant delivery or tension-compression float, making it appropriate for rigid tapping setups where the machine control manages depth and feed synchronization.

Key Features

• ER20 collet series for use with standard ER20 collet chucks
• 0.255 inch collet bore sized for 1/4 inch hand taps
• 0.191 inch square drive size for positive tap engagement
• Hand tap configuration for rigid tapping operations
• No through-coolant design keeps construction straightforward

Compatibility

Designed as an OEM-style replacement or direct-fit collet for ER20 collet chuck systems accepting 1/4 inch hand taps.

Installation Notes

Installation is performed by a machinist or toolroom technician. Power down and lock out the machine spindle before changing collets. Use the appropriate ER20 collet nut and spanner wrench to seat and torque the collet chuck assembly per the chuck manufacturer guidelines. Verify tap shank and square dimensions match the collet before use.