Value Collection SC3082056 Countersink 82 Deg 4 Flute Hss

Product Description

The VALUE COLLECTION SC3082056 is a 4-flute, single-end countersink designed for right-hand cutting in metal and general machining applications. Built from high-speed steel with a bright, uncoated finish, it delivers consistent chamfering and seat preparation for fastener holes requiring an 82-degree included angle. The 7/8-inch head diameter and 1/2-inch straight-cylindrical shank make it compatible with standard drill press chucks and milling machine collets. No pilot is included. Machinists, tool-and-die workers, and maintenance technicians reach for this type of tool when preparing countersunk holes for flat-head screws and similar fasteners in steel, aluminum, and plastics.

This countersink is suited for production and maintenance environments where consistent 82-degree chamfers are required. The 4-flute geometry provides a smoother cut and better chip clearance than single-flute designs, making it practical for moderate-speed drilling operations on a bench drill press, CNC machining center, or manual mill. The straight-cylindrical shank seats directly into standard 1/2-inch chucks without adapters. Typical applications include sheet metal fabrication, structural assembly work, and general job-shop countersinking tasks.

Key Features

• 82-degree included angle (41-degree centerline angle) for standard flat-head fastener seating
• 4-flute design improves surface finish and chip evacuation compared to single-flute tools
• High-speed steel construction provides durability across steel, aluminum, and plastic materials
• Bright, uncoated finish — no coating buildup to affect dimensional accuracy
• 1/2-inch straight-cylindrical shank fits standard drill chucks and collets without adapters
• Single-end, no-pilot design for use with pre-drilled pilot holes

Compatibility

Designed as a standard-style replacement or stock countersink for machine shops, maintenance facilities, and fabrication operations requiring 82-degree chamfering with a 1/2-inch shank and 7/8-inch head diameter.

Installation Notes

Install in a drill press, mill, or hand drill with a properly tightened 1/2-inch chuck before operation. Ensure the workpiece pilot hole is drilled to the correct diameter for the target fastener before countersinking. Run at speeds appropriate for the workpiece material and tool diameter — consult published HSS cutting speed tables for the material being machined. Inspect the cutting edges for wear or chipping before each use.