Value Collection SC4090032 Countersink 90 Degree 3 Flute Hss

Product Description

The VALUE COLLECTION SC4090032 is a single-end, 3-flute countersink designed for right-hand cutting in metalworking and fabrication applications. Built from high-speed steel (HSS) with a bright/uncoated finish, it features a 90-degree included angle and a 45-degree centerline angle. The straight-cylindrical shank measures 3/8 inch in diameter and 1 inch in shank length, while the cutting head reaches 1/2 inch in diameter. No pilot is included. This tool is suited for machinists, tool-and-die tradespeople, and fabricators who need a reliable countersink for deburring, chamfering, and seat preparation on drilled holes.

This countersink is used in general metalworking shops, manufacturing facilities, and maintenance environments where standard 90-degree countersunk fastener seats are required. The 3/8-inch straight-cylindrical shank fits conventional drill presses, milling machines, and hand-held power drills with a matching collet or chuck. The bright/uncoated HSS construction makes it well suited for use on mild steel, aluminum, brass, and similar softer metals where coating is not a prerequisite.

Key Features

• 90-degree included angle for standard countersunk fastener seat preparation
• 3 flutes for improved chip clearance and smoother cutting action
• High-speed steel construction provides durability across common metalworking materials
• 3/8-inch straight-cylindrical shank fits standard drill press and milling machine chucks
• Bright/uncoated finish — no coating buildup to affect dimensional accuracy
• Single-end design with no pilot; used in applications where a pilot hole is pre-drilled

Compatibility

Designed as an OEM-style replacement or standard-stock countersink for use in drill presses, milling machines, and hand-held power tools with a 3/8-inch chuck or collet capacity.

Installation Notes

Installation is performed by machinists or fabricators using standard machine tooling practices. Secure the shank fully in the chuck or collet before operation and verify the workpiece is clamped or fixtured to prevent movement. Always power down and de-energize the machine before changing tooling. Use appropriate cutting fluid or lubricant for the workpiece material to extend tool life and improve finish quality.