Value Collection SC2190016 Countersink 1/4 in 90 Deg 6 Flute

Product Description

The VALUE COLLECTION SC2190016 is a single-end cobalt steel countersink designed for creating clean, chamfered seat profiles in metal and other hard materials. Built with 6 flutes and a 90-degree included angle, this tool delivers smooth cutting action and reduced chatter compared to fewer-flute designs. The bright, uncoated finish maintains dimensional integrity without adding coating thickness. With a 1/4-inch head diameter and a matching 1/4-inch straight cylindrical shank, it fits standard drill chucks and collet holders used in machining and fabrication work. Licensed machinists, tool-and-die technicians, and maintenance tradespeople are the typical end users for this tool.

This countersink is suited for light-duty countersinking operations in shop, maintenance, and production environments. The 1/4-inch head diameter makes it appropriate for smaller fastener seat preparations, such as those required for machine screws and sheet metal applications. It does not include a pilot, so alignment depends on operator technique or a center-drilled pilot hole. The single-end configuration means the tool is used from one working end only. Right-hand cutting direction matches standard drill press and handheld drill rotation.

Key Features

• 6-flute design for smoother cuts and reduced chatter on hard materials
• 90-degree included angle with a 45-degree centerline angle for standard fastener seat geometry
• Cobalt steel construction for improved heat resistance compared to standard high-speed steel
• Bright, uncoated finish preserves precise head diameter tolerance
• Straight cylindrical 1/4-inch shank fits standard drill chucks and collet holders
• No pilot included — compatible with pre-drilled pilot holes for guided operation

Compatibility

Designed as an OEM-style countersink for use with standard 1/4-inch straight shank drill chucks and collet holders in drill press, CNC, or handheld drill applications requiring a 90-degree countersink profile.

Installation Notes

Installation and use of this tool is typically performed by machinists, fabricators, or maintenance technicians. Before mounting, power down and lock out the drill press or rotary tool per applicable lockout/tagout procedures. Secure the shank fully in the chuck or collet before operation, and confirm right-hand spindle rotation matches the tool cutting direction. Do not use this countersink on materials that exceed the rated capability of cobalt steel tooling without verifying suitability.