Parlec 7716-3-043 Tapping Adapter 7/16 Inch Tap

Product Description

The PARLEC 7716-3-043 is a quick-change tapping adapter designed for use with 7/16 inch taps in CNC machining and production tapping applications. It accepts a tap shank diameter of 0.323 inches and a tap square size of 0.242 inches, providing a secure, precise connection between the machine spindle and the tap. Part of the NUMERTAP 770 series, this adapter features a 1.25-inch outside shank diameter and a 3.7-inch projection. It is installed by machinists and toolroom technicians on machining centers equipped with compatible quick-change tooling systems.

This adapter is suited for production environments where fast tool changes and consistent tap alignment are priorities. The NUMERTAP 770 series is a recognized platform in high-volume tapping operations, commonly used on vertical and horizontal machining centers. It is appropriate for both job shop and production floor use where 7/16 inch tapping operations are performed in ferrous and non-ferrous materials.

Key Features

• Quick-change design allows fast tap swaps without full spindle disassembly
• 7/16 inch tap size with 0.323-inch tap shank diameter and 0.242-inch tap square size
• 1.25-inch outside shank diameter for rigid spindle coupling
• 3.7-inch projection provides clearance for deep-hole and fixture-obstructed tapping setups
• Part of the NUMERTAP 770 series for compatibility within that tooling platform
• No coolant-through design - suited for external or flood coolant applications

Compatibility

Designed for use within the NUMERTAP 770 series quick-change tapping system. Compatible with 7/16 inch taps having a 0.323-inch shank diameter and 0.242-inch square size. Consult PARLEC tooling documentation to confirm spindle-side holder compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician familiar with quick-change tapping systems. Ensure the machine spindle is fully stopped and the control is in a safe state before mounting or removing the adapter. Verify tap shank diameter and square size match the adapter specifications before seating the tap. Follow the tooling manufacturer guidelines and applicable shop safety procedures during setup.