Collis Tool 72311 Letter V MT2 Drill Driver 0.377 in

Product Description

The COLLIS TOOL 72311 is a Morse Taper 2 (MT2) outside taper drill driver designed to accept Letter V drill bits with a decimal size of 0.377 inches. The driver features a 1/4-inch projection and accommodates drill tang thicknesses from 0.239 to 0.243 inches. It is compatible with drill tang-style tooling and fits directly into MT2-equipped drilling machines, drill presses, and lathes. Licensed machinists, tool and die technicians, and shop maintenance personnel install this type of adapter to securely seat taper-shank drills in standard spindle bores without additional tooling.

This drill driver is suited for machine shop environments where Letter V drill bits are used in MT2 spindle equipment. Typical applications include production drilling on drill presses, milling machines with MT2 spindles, and manual lathes. The tang-compatible design ensures positive drive engagement and prevents the bit from rotating under load. It is appropriate for both light and moderate-duty drilling operations in metalworking and general fabrication settings.

Key Features

• MT2 outside Morse taper shank for direct spindle fitment
• Accepts Letter V drill size at 0.377 inches decimal equivalent
• 1/4-inch projection for proper bit seating and alignment
• Drill tang compatible design for positive rotational drive engagement
• 1-1/4-inch drill depth capacity
• Drill tang thickness range of 0.239 to 0.243 inches

Compatibility

Designed for use with Letter V taper-shank drill bits in MT2 spindle bores on drill presses, lathes, and milling machines equipped with a No. 2 Morse taper spindle.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine before seating or removing the taper driver from the spindle. Clean the spindle bore and taper shank thoroughly before insertion to ensure full contact and prevent runout. Use a drift pin and dead-blow mallet in the spindle drift slot to safely eject the driver when removal is required.