Parlec 7716-162 Tapping Adapter Numertap 770

Product Description

The PARLEC 7716-162 is a quick-change tapping adapter designed for use in CNC machining and production tapping operations. It accepts a 1-5/8 inch tap with a shank diameter of 1.305 inches and a tap square size of 0.979 inches. Part of the NUMERTAP 770 Series, this adapter provides secure tap retention and controlled torque transfer during rigid or floating tapping cycles. The outside shank diameter measures 1.25 inches with a projection of 2.25 inches. Licensed machinists and CNC tooling technicians install this adapter in production environments where consistent thread quality and repeatable tool changes are required.

The PARLEC 7716-162 is suited for production tapping applications in machining centers and drill-tap machines. The NUMERTAP 770 Series is a quick-change tooling platform used in moderate to high-volume threading operations across metalworking industries. This adapter supports rigid tapping setups and is applicable in both job-shop and production floor environments where repeatable tap positioning is critical. It does not include coolant-through capability, which should be considered when selecting for high-heat or deep-hole tapping operations.

Key Features

• Quick-change interface for fast tap swaps without removing the holder from the spindle
• Tap size: 1-5/8 inches with shank diameter of 1.305 inches
• Tap square size of 0.979 inches for positive drive engagement
• Outside shank diameter of 1.25 inches for compatibility with NUMERTAP 770 Series tooling
• Projection of 2.25 inches for clearance in standard tapping setups
• No coolant-through - suited for operations using flood or mist coolant externally

Compatibility

Designed for use with the NUMERTAP 770 Series quick-change tapping system. Accepts taps with a 1-5/8 inch tap size, 1.305 inch shank diameter, and 0.979 inch square drive.

Installation Notes

Installation is performed by qualified CNC tooling technicians or machinists. Power down or e-stop the machine and confirm spindle is fully stopped before changing adapters. Ensure the tap shank and square dimensions match the adapter before seating to avoid drive damage. Follow the machine tool manufacturer guidelines and applicable shop safety procedures when setting tool offsets and runout tolerances.