Value Collection SC3082048 Countersink 82 Deg 4 Flute Hss

Product Description

The VALUE COLLECTION SC3082048 is a 4-flute, single-end countersink designed for right-hand cutting in metal fabrication and machining applications. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers clean, accurate chamfered seats for flat-head fasteners. The 82-degree included angle (41-degree centerline angle) is the standard geometry for imperial flat-head screws, making this a go-to tool for machinists, tool-and-die workers, and maintenance technicians who need consistent countersink geometry without a pilot. The 3/4-inch head diameter and 1/2-inch straight cylindrical shank fit standard drill press chucks and milling machine collets.

This countersink is suited for use in machine shops, fabrication facilities, and production environments where 82-degree flat-head fastener seats are required in steel, aluminum, and similar machinable metals. The straight cylindrical shank seats securely in standard 1/2-inch drill chucks or collet holders on drill presses, milling machines, and CNC machining centers. It is sold individually and is appropriate for both low-volume bench work and higher-volume production runs where a pilotless, multi-flute countersink is preferred for chatter reduction.

Key Features

• 82-degree included angle matches standard imperial flat-head screw geometry
• 4-flute design reduces chatter and produces a smoother finish compared to single-flute tools
• High-speed steel construction provides durability across a range of machinable metals
• Bright, uncoated finish — no coating buildup concerns on tight-tolerance applications
• Pilotless design allows use without a pre-drilled pilot hole guide
• Straight cylindrical shank fits standard 1/2-inch drill chucks and collet holders

Compatibility

Designed as a standard pilotless countersink for use in any drill press, milling machine, or CNC machining center equipped with a 1/2-inch chuck or collet. Compatible with machining of steel, aluminum, and other machinable metals where an 82-degree flat-head fastener seat is required.

Installation Notes

Installed by machinists or skilled tradespeople using a drill press, milling machine, or hand-held drill with a 1/2-inch chuck. Secure the shank fully in the chuck before operation and confirm the workpiece is clamped or fixtured to prevent movement. Run at appropriate spindle speeds for the material being cut — consult standard HSS cutting speed charts for the specific workpiece material. Inspect the cutting edges before each use and replace if chipping or excessive wear is observed.