Collis Tool 74450 Pipe Tap MT4 Taper Shank Driver 3/8 in

Product Description

The COLLIS TOOL 74450 is a 3/8 inch pipe tap with an MT4 taper shank split sleeve tapping driver, designed for creating threaded pipe connections in metal workpieces. The tap features a 1.5 inch entry depth, a 0.375 inch projection, and a 0.531 inch tap shank square, providing a secure positive drive during tapping operations. This tool is used by machinists and trade professionals working on plumbing, HVAC, and mechanical systems where precise pipe-thread tapping is required in a machine-tool environment. The MT4 taper shank mounts directly into compatible spindles or tapping heads for controlled, repeatable thread cutting.

The 74450 is suited for machine tapping applications where 3/8 inch pipe threads must be cut cleanly and consistently. The split sleeve tapping driver accommodates the MT4 taper shank interface, making it appropriate for use with drill presses, milling machines, and tapping machines equipped with MT4 spindle sockets. The 1.5 inch tap entry depth allows adequate thread engagement for standard pipe fittings. Typical users include industrial machinists, pipefitters, and HVAC or plumbing fabricators working in shop or production environments.

Key Features

• 3/8 inch pipe tap size for standard NPT pipe thread applications
• MT4 taper shank interface for direct mounting to compatible machine spindles
• Split sleeve tapping driver design provides positive drive and controlled torque transfer
• 1.5 inch tap entry depth for full thread engagement on standard pipe fittings
• 0.531 inch tap shank square ensures secure seating in the driver sleeve
• 0.7 inch tap shank diameter for stable alignment during tapping

Compatibility

Designed for use with machine tools equipped with MT4 taper spindle sockets, including drill presses, milling machines, and dedicated tapping machines requiring a 3/8 inch pipe tap configuration.

Installation Notes

Installation and use of this tapping driver should be performed by a qualified machinist or trade professional familiar with machine tapping procedures. Ensure the machine spindle is fully powered down and locked out before mounting or removing the MT4 shank. Verify the taper shank seating is clean and free of chips or debris before insertion to prevent runout. Always use appropriate cutting fluid for the workpiece material when tapping pipe threads.