Value Collection SC5090D0 Countersink 90 Degree Hss

Product Description

The VALUE COLLECTION SC5090D0 is a single-flute countersink designed for countersinking and deburring operations in metal and similar materials. Built from high-speed steel with a bright, uncoated finish, this tool features a 90-degree included angle and a 45-degree centerline angle. The straight-cylindrical shank measures 0.25 inches in diameter for secure chuck engagement. The cutting range spans from 0.0625 inches minimum to 0.234 inches maximum, making it suited for small-hole chamfering tasks. It is a head-only design with no pilot and a double end type. Machinists and maintenance technicians are the typical installers of this tool.

This countersink is used in machining, fabrication, and maintenance applications where chamfering or deburring of small-diameter holes is required. The 90-degree included angle is the most common standard for countersunk fastener seats, making this tool directly applicable to preparing holes for flat-head screws and similar hardware. Its compact cutting range suits thin-stock and precision work where larger tools would be inappropriate. Right-hand cutting direction aligns with standard drill press and CNC spindle rotation.

Key Features

• 90-degree included angle for standard countersunk fastener seat preparation
• High-speed steel construction for general-purpose metal cutting
• Bright, uncoated finish suitable for dry or lubricated cutting
• Straight-cylindrical 0.25-inch shank fits standard drill chucks and collets
• Double-end design extends usable tool life
• No pilot required, allowing flexible hole alignment

Compatibility

Designed as a general-purpose countersink for use in standard drill presses, hand drills, and CNC lathes or mills accepting a 0.25-inch straight-cylindrical shank.

Installation Notes

Installation is performed by machinists or maintenance technicians using a drill press, hand drill, or CNC machine. Secure the shank fully in the chuck or collet before operation and confirm the spindle is fully stopped before changing or adjusting the tool. Use appropriate cutting fluid for harder materials to reduce heat buildup and extend tool life. Always wear appropriate eye protection when operating rotary cutting tools.