Value Collection SC2090048 Countersink 90 Degree 6 Flute

Product Description

The VALUE COLLECTION SC2090048 is a single-end, 6-flute countersink designed for right-hand cutting in a wide range of metalworking and fabrication applications. Built from high-speed steel with a bright, uncoated finish, it carries a 90-degree included angle and a 45-degree centerline angle, making it suited for producing standard 90-degree countersunk holes. The 1/2-inch straight-cylindrical shank fits common drill presses, milling machines, and hand-held power tools with compatible chucks. No pilot is included, so the tool relies on operator guidance for hole alignment. Licensed machinists, tool and die workers, and metal fabricators are the primary users.

This countersink is used in general metalworking, machine shop, and light fabrication settings where standard 90-degree countersunk profiles are required for flathead fasteners. The 3/4-inch head diameter and 6-flute geometry produce a relatively smooth finish on the chamfer, reducing chatter compared to single- or double-flute designs. It is a straightforward bench or machine tool suited for ferrous and non-ferrous metals commonly encountered in production and maintenance work.

Key Features

• 90-degree included angle for standard flathead fastener seating
• 6-flute design reduces chatter and improves surface finish on the countersink chamfer
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Bright, uncoated finish — no coating to chip or peel during use
• Straight-cylindrical 1/2-inch shank fits standard drill chucks and collets
• Single-end, no-pilot configuration for use across a range of hole sizes

Compatibility

Designed as a general-purpose countersink for use in drill presses, milling machines, and hand-held power tools equipped with a 1/2-inch or larger chuck or collet capable of accepting a straight-cylindrical shank.

Installation Notes

This tool is installed by a machinist or fabricator into a drill press, mill, or power drill with an appropriate chuck size. Secure the shank firmly before operation and confirm the workpiece is clamped or fixtured to prevent movement. Run at speeds appropriate for the material being machined — consult standard cutting-speed tables for high-speed steel tooling. Inspect the cutting edges before use and do not operate a chipped or dulled countersink, as this increases the risk of chatter and poor hole geometry.