Grobet 31.304 Swiss-pattern File 4 in Round Parallel Cut 0

Product Description

The GROBET 31.304 is a Swiss-pattern round parallel file engineered for precision hand filing in metalworking, toolmaking, and finishing applications. With an overall length of 4 inches and a 1/16-inch diameter, this compact file is suited for working in tight spaces, narrow slots, and small-diameter bores. The Cut 0 double-cut tooth pattern provides an aggressive yet controlled material removal rate appropriate for standard-precision work. A tang is included for use with a compatible file handle. Machinists, toolmakers, and trade professionals install this file where fine dimensional control and consistent surface finish are required.

This file is designed for precision deburring, shaping, and fitting operations on ferrous and non-ferrous metals. The round parallel profile maintains a consistent 1/16-inch diameter along the working length, making it effective for enlarging and truing small round holes, cleaning keyways, and refining narrow internal features. It is commonly found in machine shops, tool and die work, and maintenance environments where hand filing remains part of the workflow.

Key Features

• Cut 0 double-cut tooth pattern for standard-precision material removal
• Round parallel profile with consistent 1/16-inch diameter along full working length
• 4-inch overall length suited for confined access and small-feature work
• Tang drive end compatible with standard file handles
• Swiss-pattern construction for consistent tooth geometry and controlled cut

Compatibility

Designed as a standard Swiss-pattern round parallel file suitable for general hand-filing operations on metal workpieces where a 4-inch, 1/16-inch diameter round file is specified.

Installation Notes

Always fit a proper handle onto the tang before use to prevent hand injury during filing operations. Secure the workpiece in a vise or fixture before applying pressure with the file. Use forward strokes with moderate, even pressure and lift the file on the return stroke to extend tooth life. Inspect the file regularly for clogging and use a file card or brush to clear metal particles from the teeth.