Parlec 7716-6-037 Tapping Adapter Numertap 770

Product Description

The PARLEC 7716-6-037 is a quick-change tapping adapter designed for use in CNC machining centers and tapping operations where repeatable, rigid tap holding is required. It features a 0.381-inch tap shank diameter and a 0.286-inch tap square size, placing it in the NUMERTAP 770 series of precision tapping holders. The outside shank diameter measures 1.25 inches, and the projection is 6.7 inches. Licensed machinists and CNC setup technicians install this adapter as part of a modular quick-change tooling system, allowing fast tap changeovers without removing the toolholder from the spindle.

This adapter is suited for production tapping applications in precision machining environments, including job shops and manufacturing facilities running high-volume or mixed-lot work. The NUMERTAP 770 series is designed for use where consistent tap alignment and depth control are critical. It does not include coolant-through capability, making it best suited for applications where flood or mist coolant is applied externally rather than through the tool.

Key Features

• Quick-change design allows rapid tap swaps without full toolholder removal
• 0.381-inch tap shank diameter fits standard tapping tool shanks in this size range
• 0.286-inch tap square size provides positive drive engagement
• 6.7-inch projection accommodates deep-reach tapping setups
• 1.25-inch outside shank diameter for stable seating in the toolholder body
• Part of the NUMERTAP 770 modular series for consistent system compatibility

Compatibility

Designed for use within the PARLEC NUMERTAP 770 series quick-change tapping system. Accepts taps with a 0.381-inch shank diameter and 0.286-inch square drive size.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician with the machine spindle fully stopped and the machine in a safe, locked-out state before any tooling changes. Verify that the tap shank diameter and square size match the adapter specifications before seating the tap. Confirm projection length suits the workpiece setup and that no interference exists with fixtures or the machine table.