Chicago-latrobe 56740 Countersink 1/2 in 82 Deg Hss

Product Description

The CHICAGO-LATROBE 56740 is a single-flute, high speed steel countersink designed for chamfering, countersinking, and deburring operations in metalworking applications. It features a 1/2 inch head diameter with an 82-degree included angle, making it well suited for standard flat-head fastener seat preparation. The straight-cylindrical shank measures 6.35 mm in diameter and the tool has an overall length of 2.0 inches. An oxide coating helps reduce friction and provides basic surface protection during cutting. Right-hand cutting direction is standard for conventional drill press and hand-drill use.

This countersink is intended for use on alloy steel, cast iron, and tool steel workpieces in industrial maintenance, machine shop, and fabrication environments. It is a single-end tool with no pilot, which allows the operator to guide placement manually or with a fixture. Typical users include machinists, millwrights, and maintenance technicians working in shops or in the field. The 1/2 inch maximum cutting diameter covers the most common flat-head screw sizes encountered in structural and mechanical assembly work.

Key Features

• 82-degree included angle for standard flat-head fastener countersinking
• 1/2 inch head diameter and 1/2 inch maximum cutting diameter
• Single flute geometry for clean, controlled material removal
• High speed steel construction for use on alloy steel, cast iron, and tool steel
• Oxide coating reduces friction and provides surface protection
• Straight-cylindrical shank for compatibility with standard chuck styles

Compatibility

Designed as an OEM-style countersink for use in standard drill presses, CNC machines, and hand drills accepting a straight-cylindrical shank. Suitable for material applications including alloy steel, cast iron, and tool steel as specified by the manufacturer.

Installation Notes

Machinists and maintenance technicians should secure the workpiece firmly before operation and verify that the drill press or hand drill chuck is properly tightened on the straight shank. Cutting speed should be selected according to the material being worked and the tool diameter. Wear appropriate eye protection and follow applicable shop safety procedures when operating rotary cutting tools.