Techniks 05570-323 ER32 Tap Collet 0.323 Inch

Product Description

The TECHNIKS 05570-323 is an ER32 tap collet designed to hold 7/16 inch hand taps in ER32-compatible toolholders. With a collet bore of 0.323 inches and a square drive size of 0.242 inches, this collet provides positive engagement with the tap shank, preventing rotation during threading operations. It is used in CNC machining centers, knee mills, and drill presses wherever controlled tapping is performed. Installation is handled by machinists and tool-room technicians. The ER32 series is a widely adopted standard, making this collet a straightforward fit into existing ER32 toolholding systems.

This collet is suited for hand tap applications in ferrous and non-ferrous materials across job shops, production machining, and maintenance environments. It does not support through-coolant delivery and is not a tension-compression tap collet, making it appropriate for rigid tapping setups where the machine control manages feed rate synchronization with spindle speed. The 7/16 inch tap size coverage makes it a common selection for structural fastener thread sizes encountered in general machining work.

Key Features

• ER32 collet series for broad compatibility with standard ER32 chucks and toolholders
• 0.323 inch bore accepts 7/16 inch hand tap shanks with positive square drive engagement
• Square drive size of 0.242 inches prevents tap rotation during the threading cycle
• Designed for hand tap style - not a tension-compression or through-coolant collet
• Lightweight at 0.5 pounds, minimizing added mass in the spindle

Compatibility

Designed as an OEM-style replacement or direct-fit collet for ER32 toolholding systems accepting hand tap collets with a 0.323 inch bore and 7/16 inch tap size.

Installation Notes

Installation is performed by a machinist or toolroom technician. Power down and de-energize the machine spindle completely before changing collets. Seat the collet fully into the ER32 nut before threading onto the chuck body, and torque the nut with a proper ER collet wrench - do not use pipe wrenches or improvised tools. Inspect the collet bore and chuck taper for chips or contamination before assembly to ensure accurate tap alignment.