Value Collection SC10100116 Countersink 100 Deg Hss

Product Description

The VALUE COLLECTION SC10100116 is a single-flute, high-speed steel countersink designed for countersinking operations in metal, wood, and composite materials. It features a 100-degree included angle with a 1-1/4 inch head diameter and a 3/4 inch straight-cylindrical shank. The bright, uncoated finish suits general-purpose applications where coating is not required. Right-hand cutting direction matches standard drill press and hand drill operation. Machinists and fabricators install this tool to produce clean, chamfered seat profiles for flat-head fasteners in production and maintenance environments.

This countersink is suited for use in machine shops, fabrication facilities, and maintenance operations requiring consistent 100-degree chamfer geometry. The straight-cylindrical shank seats directly in standard drill chucks or machine spindles without an adapter. Its single-flute geometry reduces chatter and produces a smooth finish, making it appropriate for precise countersink seating in both light production runs and single-part work.

Key Features

• 100-degree included angle (50-degree centerline angle) for flat-head fastener seating
• Single-flute design minimizes chatter and promotes clean surface finish
• High-speed steel construction provides durability across a range of workpiece materials
• 3/4 inch straight-cylindrical shank fits standard drill chucks and machine spindles
• 1-1/4 inch head diameter accommodates larger fastener head profiles
• Bright, uncoated finish — no coating to flake or contaminate the work surface

Compatibility

Designed as a general-purpose countersink for use in standard drill presses, CNC machining centers, and hand drills accepting a 3/4 inch straight-cylindrical shank. No pilot included; fits applications where a pilotless single-flute countersink is appropriate.

Installation Notes

Installation is performed by machinists or qualified fabricators. Secure the 3/4 inch shank fully in the chuck or collet before operation and confirm the workpiece is clamped to prevent rotation. Run at appropriate spindle speeds for the workpiece material — consult published HSS cutting speed tables for the specific material being countersunk. Do not force the tool or use it as a drill; it is intended for countersinking only, not hole boring.