Tru-Cut 3/8″-82 Angle Single Flute Countersink High Speed Steel CRS.375

Overview

The Tru-Cut CRS.375 is a 3/8″ diameter single flute countersink engineered for high-speed, precision hole chamfering in metalworking and manufacturing. With an 82-degree included angle and high-speed steel construction, this tool delivers clean, accurate recesses suitable for flathead screw and rivet countersinking. The 1/4″ shank fits standard drill chucks and spindles, making it compatible with CNC mills, manual machines, and production drill presses.

Key Features

• Single flute design — Provides positive cutting action with minimal chatter and improved surface finish
• 82-degree included angle — Industry-standard angle for flathead metric and inch fasteners
• High-speed steel (HSS) construction — Durable, cost-effective material suitable for steel, aluminum, and composite materials
• 1/4″ shank diameter — Direct fit into standard drill chucks and spindles
• 2″ overall length — Balanced reach for deep workpieces and controlled penetration

Technical Specifications

Typical Applications

• Aerospace & defense — Flathead rivet and screw countersinking
• Automotive machining — Engine block and transmission housing preparation
• General metal fabrication — Steel, aluminum, and stainless countersinking
• Production drilling — High-speed CNC and manual mill operations
• Composite repair — Hole finishing on aircraft and composite structures

Compatibility & Replacements

Compatible With

• Standard drill chucks (1/4″ shank)
• CNC mills and machining centers
• Manual milling machines
• Production drill presses
• Portable drill motors with 1/4″ chuck capacity

Replaces / Drop-In Replacement For

• Verify compatibility with your system integrator before ordering. Replacement applications should match the 3/8″ diameter, 82-degree angle, and 1/4″ shank requirements.

Works With

• Standard drill chuck systems
• Spindle taper adapters (verify shank fit)
• CNC-controlled drilling and milling systems
• Industrial machine tool spindles