Collis Tool 73421 MT3 Split Sleeve Tapping Driver

Product Description

The COLLIS TOOL 73421 is an MT3 taper shank split sleeve tapping driver designed for precision tapping operations in machine tool applications. It accepts a 9/16 inch tap and provides a tap entry depth of 1-9/32 inches with a 1/4 inch projection. The driver features a tap shank diameter of 0.429 inches and a tap shank square of 0.322 inches. This style of driver is commonly installed in drill press, milling machine, or lathe setups by machinists and toolroom technicians who require controlled tapping with the flexibility to reverse without spindle reversal.

The 73421 is suited for use in metalworking environments where repeatable, torque-sensitive tapping is required. The MT3 taper shank mates directly with compatible machine spindles, making it a practical choice for production and maintenance shop applications. It is appropriate for use with standard straight-shank taps in the specified shank diameter and square dimensions.

Key Features

• MT3 taper shank for direct spindle mounting without an adapter
• Split sleeve design allows tap engagement and release without spindle reversal
• Accepts 9/16 inch tap size with 1-9/32 inch tap entry depth
• 1/4 inch projection for controlled tap positioning
• Tap shank square of 0.322 inches provides positive drive engagement

Compatibility

Designed for use with machine spindles accepting an MT3 taper and standard straight-shank taps with a 0.429 inch shank diameter and 0.322 inch shank square.

Installation Notes

Installation is performed by machinists or toolroom technicians. Ensure the machine spindle is fully powered down and locked before seating or removing the MT3 taper shank. Clean the taper bore and shank thoroughly before insertion to ensure full contact and prevent runout. Follow the machine manufacturer guidelines and applicable shop safety procedures when setting up tapping operations.