Value Collection SC10100032 Countersink 100 Deg 1 Flute Hss

Product Description

The VALUE COLLECTION SC10100032 is a single-flute, high-speed steel countersink designed for deburring and chamfering operations that require a 100-degree included angle. Built with a straight-cylindrical shank measuring 0.25 inches in diameter and a head diameter of 0.5 inches, this tool mounts directly into standard drill chucks or collet holders. The right-hand cutting direction and bright uncoated finish make it a straightforward, no-frills option for general countersinking work in metal, wood, and composite materials. Licensed machinists, tool-and-die technicians, and maintenance professionals reach for this style of countersink when a clean, accurate chamfer is required without the complexity of multi-flute chatter.

This countersink is suited for use in manual drill presses, CNC machining centers, and hand-held power drills where a 0.25-inch straight shank is accepted. The 100-degree included angle is commonly specified for aerospace and sheet-metal fastener seating, particularly for flush-head screws and rivets that call for a wider-angle seat than the more common 82-degree or 90-degree profiles. Single-flute geometry reduces chatter on thin-wall workpieces and softer metals. It ships individually and is sold in a minimum quantity of one unit.

Key Features

• 100-degree included angle (50-degree centerline angle) suits wide-seat fastener applications
• Single-flute design minimizes chatter on thin-wall and soft-material workpieces
• High-speed steel construction provides good wear resistance across general-purpose materials
• Straight-cylindrical 0.25-inch shank fits standard drill chucks and collet holders
• 0.5-inch head diameter handles a range of common fastener sizes
• Bright uncoated finish allows easy visual inspection of cutting edge condition

Compatibility

Designed as a general-purpose countersink for use in any machine tool or hand-held drill accepting a 0.25-inch straight-cylindrical shank; no pilot included and no pilot required for standard countersinking operations.

Installation Notes

A licensed machinist or experienced technician should secure the shank firmly in the chuck or collet before operation, verifying runout is within acceptable limits for the application. Always power down and lock out the machine before changing or inspecting the tool. Feed rate and spindle speed should be set according to the workpiece material and tool manufacturer recommendations for high-speed steel cutters. Wear appropriate eye protection and ensure the workpiece is properly clamped before beginning the countersinking operation.