Sgs 74213 Countersink 1/2 in 90 Degree Solid Carbide

Product Description

The SGS 74213 is a single-flute solid carbide countersink designed for precision chamfering and seat preparation in a wide range of materials. It features a 90-degree included angle and a 1/2-inch head diameter, making it suited for standard fastener seating applications. The straight-cylindrical shank measures 1/4 inch in diameter, and the tool has an overall length of 2.875 inches. Solid carbide construction delivers hardness and wear resistance beyond high-speed steel, supporting use in abrasive and difficult-to-machine workpiece materials. Machinists, toolmakers, and CNC operators working in production or job shop environments are the primary installers and users of this tool.

This countersink is applicable across a broad spectrum of materials including steel, stainless steel, cast iron, titanium, high-temperature alloys, non-ferrous metals, composites, and plastics. The single-flute design reduces cutting forces and improves surface finish in harder materials where chatter can be a concern. It is used in machine shop, aerospace, and general metalworking setups where consistent countersink geometry is required for flathead fastener installations or deburring operations.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive materials
• 90-degree included angle for standard flathead fastener seating
• 1/2-inch maximum cutting diameter with 1/4-inch straight-cylindrical shank
• Single-flute geometry reduces cutting forces and minimizes chatter
• Right-hand cutting direction compatible with standard spindle rotation
• No pilot required — single-end design for direct machine spindle mounting

Compatibility

Designed for countersinking operations in steel, stainless steel, cast iron, titanium, high-temperature alloys, non-ferrous metals, composites, and plastics. The 1/4-inch straight-cylindrical shank fits standard collets and drill chucks that accept that shank diameter.

Installation Notes

This tool is installed and operated by machinists and CNC operators using standard drill press, milling machine, or lathe setups. Secure the 1/4-inch shank in a properly sized collet or drill chuck before operation and verify runout is within acceptable tolerances for the application. Use appropriate cutting speeds and feeds for the workpiece material — solid carbide tooling generally runs at higher speeds than high-speed steel but is sensitive to interrupted cuts and side-loading. Always follow applicable machine safety protocols and wear appropriate eye protection during operation.