Dumont Minute Man 66635 Square Broach 10mm

Product Description

The DUMONT MINUTE MAN 66635 is a 10mm square broach designed for precision broaching operations in drive, fixture, and jig applications. With an overall length of 10.25 inches and a pilot hole diameter of 0.4094 inches, this broach produces a square profile with a tolerance range of 0.3937 to 0.3945 inches and an across-corners dimension of 0.553 to 0.555 inches. The tool accommodates a 1/4-inch pitch and a length of cut (LOC) ranging from 3/8 inch to 1-1/4 inches, with a maximum pressure rating of 3,600 pounds at maximum LOC. It is suited for machinists, toolmakers, and shop technicians performing precision keyway or square-hole broaching tasks.

This broach is used in manufacturing and maintenance environments where accurate square bores are required in metal workpieces. Typical applications include producing square drive sockets, fixture locating bores, and jig components. The 10.4mm drill size recommendation ensures proper pilot hole preparation before broaching. The uncoated finish is appropriate for standard broaching operations across a range of metallic materials.

Key Features

• 10mm square broach profile with tight tolerance: 0.3937 to 0.3945 inches
• Overall length of 10.25 inches for extended reach in deep bore applications
• Pilot hole diameter of 0.4094 inches with a recommended 10.4mm drill
• 1/4-inch pitch with LOC range of 3/8 inch to 1-1/4 inches
• Rated for up to 3,600 pounds of pressure at maximum LOC
• Uncoated finish for use in drive, fixture, and jig broaching operations

Compatibility

Designed as an OEM-style replacement or direct-use square broach for standard broaching press setups requiring a 10mm square profile with a 0.4094-inch pilot hole.

Installation Notes

Square broaches are installed and operated by machinists or tool and die technicians using a broaching press or arbor press. Ensure the pilot hole is drilled to the specified 10.4mm diameter before broaching to prevent tool damage or workpiece binding. Do not exceed the rated 3,600-pound pressure at maximum LOC. Always secure the workpiece firmly and verify alignment before applying press force.