Parlec 7716-6-031 Tapping Adapter Numertap 770

Product Description

The PARLEC 7716-6-031 is a quick-change tapping adapter from the NUMERTAP 770 Series, designed for use in CNC machining and production tapping operations. It accepts a tap shank diameter of 0.318 inches and a tap square size of 0.238 inches, providing a secure and repeatable connection between the tapping head and the cutting tool. With a 6.7-inch projection and a 1.25-inch outside shank diameter, this adapter suits a range of machine spindle setups. It is installed by machinists and tooling technicians working in metal fabrication, job shops, and production facilities requiring consistent thread quality.

The 7716-6-031 is suited for use in vertical and horizontal machining centers where quick-change tooling systems reduce setup time between operations. The NUMERTAP 770 Series is designed for synchronous and semi-synchronous tapping applications. This adapter does not include coolant-through capability, making it appropriate for operations where flood or external coolant delivery is sufficient.

Key Features

• Quick-change interface for fast tool changeover in production environments
• Tap shank diameter of 0.318 inches for precise tool seating
• Tap square size of 0.238 inches ensures positive drive engagement
• 6.7-inch projection accommodates deep-reach tapping setups
• 1.25-inch outside shank diameter for rigid spindle connection
• Part of the NUMERTAP 770 Series for system-level compatibility

Compatibility

Designed for use within the PARLEC NUMERTAP 770 Series quick-change tapping system. Consult PARLEC tooling documentation to confirm fitment with specific tapping heads and machine spindle configurations.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the tapping program is disabled before changing or seating the adapter. Verify shank and collet interfaces are clean and free of chips before assembly. Follow the machine tool manufacturer and toolholder manufacturer guidelines for proper torque and retention force on the shank connection.