Precision Twist Drill 4710800 Countersink 5/8 Inch 80 Degree

Product Description

The PRECISION TWIST DRILL 4710800 is a single-flute, straight-shank countersink designed for clean, precise countersinking in metal fabrication and general machining applications. It features an 80-degree included angle and a 5/8-inch tip diameter, making it well suited for creating flush seating for flat-head fasteners in steel, aluminum, and similar materials. The straight shank allows direct chucking in standard drill presses, lathes, and hand drills without an adapter. At 0.1 pounds, it is a lightweight, single-piece cutting tool intended for professional use by machinists, pipefitters, and fabricators who need consistent countersink geometry on every pass.

This countersink is appropriate for use in light manufacturing, maintenance and repair operations, and job-site metal fabrication. It handles countersinking tasks where a clean, burr-free entry seat is required prior to fastener installation. The 5/8-inch tip diameter accommodates common flat-head screw sizes used in structural and sheet-metal assemblies. Its single-flute geometry helps reduce chatter during cutting, which is particularly useful when working with softer metals or thin-gauge stock.

Key Features

• Single-flute design reduces chatter and produces a cleaner countersink finish
• 80-degree included angle for standard flat-head fastener seating
• 5/8-inch tip diameter suits a range of common fastener head sizes
• Straight shank accepts standard drill chuck without adapter
• Overall length of 2-3/32 inches in a compact, easy-to-handle profile
• Lightweight at 0.1 pounds for reduced operator fatigue during repetitive use

Compatibility

Designed as an OEM-style replacement or direct-use countersink compatible with standard straight-shank drill chucks on drill presses, lathes, and handheld power drills.

Installation Notes

Installation should be performed by a qualified machinist or tradesperson familiar with rotary cutting tools. Secure the straight shank firmly in the drill chuck before operation and verify the workpiece is clamped or fixtured to prevent movement. Always wear appropriate eye protection when operating countersinking tools. Inspect the cutting flute for wear or damage before each use and replace the tool if the cutting edge is chipped or dull.

Technical Specifications

• Tip Diameter: 5/8 inches
• Overall Length: 2-3/32 inches
• Countersink Angle: 80 degrees
• Flute Configuration: Single flute
• Shank Type: Straight
• Weight: 0.1 pounds

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 4710800