Precision Twist Drill 4710798 Countersink 3/8 Inch 80 Degree

Product Description

The PRECISION TWIST DRILL 4710798 is a single flute, straight shank countersink designed for deburring and chamfering operations in metal fabrication and general machining work. With a 3/8 inch tip diameter and an 80-degree included angle, this countersink produces clean, consistent countersunk seats for flat-head fasteners. The overall length is 1-21/32 inches, keeping the tool compact for use in standard drill chucks or hand-held drivers. The single flute geometry reduces chatter and provides smooth cutting action in a variety of workpiece materials. Machinists, pipefitters, and fabricators working in trade environments rely on this style of tool for finishing drilled holes before fastener installation.

This countersink is suited for use on metal substrates in both shop and field environments. It is well matched to applications where a clean countersink is required prior to seating flat-head machine screws or bolts flush with a work surface. The straight shank fits standard drill chucks without a collet adapter, making it practical for use with hand drills, drill presses, and portable power tools commonly found in HVAC, plumbing, and electrical trade work.

Key Features

• Single flute design reduces chatter and produces a smooth countersink finish
• 80-degree included angle suits flat-head fastener seating in metal fabrication
• 3/8 inch tip diameter covers common fastener sizes
• Straight shank fits standard drill chucks without adapters
• Compact 1-21/32 inch overall length for use in confined spaces
• Lightweight at 0.01 pounds for easy handling and portability

Compatibility

Designed as an OEM-style replacement or direct-use countersink compatible with standard three-jaw drill chucks accepting straight shank tooling.

Installation Notes

This countersink is installed by a machinist or trade technician using a drill press, hand drill, or portable power tool with a standard chuck. Secure the straight shank firmly in the chuck before operating to prevent slippage. Use appropriate cutting speed for the workpiece material and apply cutting fluid when working hardened metals to extend tool life. Always wear eye protection when operating rotary cutting tools.

Technical Specifications

• Tip Diameter: 3/8 inches
• Overall Length: 1-21/32 inches
• Included Angle: 80 degrees
• Flute Configuration: Single flute
• Shank Type: Straight
• Weight: 0.01 pounds
• Sold As: Each

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 4710798