Accupro CY01309000MSC Drill Chuck 3/8-24 Threaded Keyed

Product Description

The ACCUPRO CY01309000MSC is a keyed drill chuck designed for threaded-mount spindles with a 3/8-24 thread size. It accepts bit shanks from 3/64 inch (0.0591 inch decimal) up to 1/2 inch (0.5000 inch decimal), covering the full range of standard twist drills, step bits, and driver accessories used in bench drills, drill presses, and portable drilling equipment. The chuck body is steel construction with a plain bearing and a sleeve diameter of 46 mm. Tightening is performed with a K2 key for secure bit retention under load. Machinists, tool-and-die techs, and general fabrication shops are the primary users of this style of chuck.

This chuck fits drilling applications in light industrial, maintenance, and fabrication environments where a threaded-mount chuck is required. The 3/8-24 mounting thread is common on benchtop drill presses and portable drill motors in the light-duty to mid-duty range. The keyed design suits applications where bit slippage under torque is a concern, such as repetitive hole production in metal or hard plastics. It is not intended for hammer-drill or rotary-impact use.

Key Features

• Capacity range of 3/64 inch to 1/2 inch covers standard twist drill and accessory shank sizes
• 3/8-24 threaded mount for direct spindle installation without an adapter arbor
• Keyed chuck with K2 key provides positive bit clamping under sustained drilling torque
• Steel chuck body for durability in production and maintenance drilling environments
• 46 mm sleeve diameter with plain bearing construction
• Closed length of approximately 77 mm and open length of approximately 62 mm for compact spindle projection

Compatibility

Designed for use on drill press spindles and portable drill motors equipped with a 3/8-24 threaded mount. Verify spindle thread specification before installation.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician familiar with drill press spindle service. Power down and lock out the machine before removing the existing chuck or mounting this unit. Thread the chuck onto the spindle by hand first to confirm thread engagement, then tighten per the machine manufacturer's torque guidance. Do not use impact tools to seat a threaded-mount chuck onto a spindle.