Collis Tool 70405 Standard Tapping Driver MT4 Taper Shank

Product Description

The COLLIS TOOL 70405 is a standard tapping driver designed for use with 1-1/4 inch taps in machine tool and production tapping applications. Fitted with an MT4 taper shank, it mounts directly into compatible taper-shank spindles on drill presses, mills, and tapping machines. The driver provides 3 inches of projection from the shank face and accepts taps with a 1.021 inch shank diameter and a 0.766 inch square drive. Weighing 2.93 pounds, it is built for repeated use in shop environments where consistent tap alignment and positive drive are required. Machinists and tool-room technicians are the primary installers and operators of this type of driver.

This tapping driver suits production and maintenance tapping operations in metal fabrication shops, machine shops, and tool rooms. It is intended for use on manual or CNC machines equipped with an MT4 taper spindle. The 2.19 inch tap entry depth accommodates standard-length tap shanks in this size class, making it suitable for through-hole and blind-hole tapping setups in ferrous and non-ferrous materials.

Key Features

• MT4 taper shank mounts directly into MT4-compatible spindles without adapters
• Accepts 1-1/4 inch taps with a 1.021 inch shank diameter
• 0.766 inch tap shank square provides positive rotational drive
• 2.19 inch tap entry depth accommodates standard tap shank lengths
• 3 inch projection gives clearance for typical workpiece and fixture heights
• Weighs 2.93 pounds for stable, low-vibration operation

Compatibility

Designed as a direct-fit tapping driver for machines equipped with an MT4 taper spindle and used with 1-1/4 inch taps conforming to standard shank diameter and square dimensions.

Installation Notes

Installation is performed by qualified machinists or tool-room technicians. Power down and de-energize the machine spindle completely before mounting or removing the driver. Clean the MT4 taper bore and shank surfaces before seating to ensure full contact and prevent fretting. Do not force the shank; seat it by hand and secure it per the machine manufacturer's drawbar or retention specifications.