Value Collection SC2182116 Countersink 1-1/4 in 82 Deg 6 Flute

Product Description

The VALUE COLLECTION SC2182116 is a single-end cobalt steel countersink designed for professional metalworking and machining applications. It features a 1-1/4 inch head diameter and an 82-degree included angle, making it suited for creating properly angled seat profiles for flat-head fasteners. The 6-flute design promotes smooth cutting action and improved chip evacuation compared to fewer-flute configurations. The straight-cylindrical 3/4 inch shank provides secure, concentric clamping in standard drill chucks or machine tool holders. The bright, uncoated finish is consistent with cobalt steel tooling intended for direct use without additional surface treatment. No pilot pin is included, and the tool does not function as a countersink head-only style — it is a complete single-end countersink.

This countersink is appropriate for use in machine shops, fabrication facilities, and industrial maintenance environments. It is suited for countersinking operations in steel, stainless steel, cast iron, and other ferrous materials where cobalt steel's elevated heat resistance provides an advantage over standard high-speed steel. Typical applications include deburring, chamfering, and seating flat-head or oval-head fasteners to a flush finish. The 82-degree angle matches the standard included angle specified for many flat-head machine screw applications in North American manufacturing. It is installed and operated by machinists, tool-and-die workers, and experienced maintenance technicians.

Key Features

• 1-1/4 inch head diameter with 82-degree included angle for flat-head fastener seating
• 6 flutes for smoother cutting action and more efficient chip evacuation
• Cobalt steel construction for improved heat resistance in ferrous material applications
• 3/4 inch straight-cylindrical shank for secure clamping in standard holders
• Right-hand cut direction for use in conventional clockwise-rotation machine tools
• Bright, uncoated finish — no additional coating to affect dimensional tolerance at the cutting edge

Compatibility

Designed as a standard single-end countersink for use in drill presses, milling machines, and CNC machining centers equipped with a chuck or tool holder accepting a 3/4 inch straight-cylindrical shank.

Installation Notes

This tool is installed by a machinist or maintenance technician into a drill chuck or collet-style holder on a drill press, mill, or CNC machine. Ensure the machine is fully powered down and the spindle is locked before changing tooling. Set spindle speed appropriate to the workpiece material and tool diameter per standard machining feeds-and-speeds references — cobalt steel tolerates higher cutting temperatures than standard HSS but still requires appropriate speed selection to maximize tool life. Secure the shank firmly and verify runout before beginning the countersinking operation.