Grobet 31.498 Swiss-pattern Equalling Needle File 4 in

Product Description

The GROBET 31.498 is a Swiss-pattern equalling needle file designed for precision material removal and surface finishing in tight tolerances. With a 4-inch overall length and a 1.75-inch length of cut, this Cut 0 file delivers a coarse-grade bite suited for aggressive stock removal on flat and parallel surfaces. The rectangular cross-section produces equalling geometry, meaning both faces and edges cut simultaneously, keeping surfaces square. Machinists, toolmakers, jewelers, and die filers reach for this file when working on metal, plastic, or composite workpieces that demand controlled flatness.

This file fits into applications where a full-size hand file is too large and where reach into recessed slots, keyways, or small flat surfaces is required. The needle-file form factor and tang end make it compatible with standard pin-vise handles or palm-grip handles sold separately. Typical use cases include deburring machined parts, fitting mating surfaces, cleaning die cavities, and refining filed edges before final inspection. The Cut 0 coarseness is the starting point for multi-step finishing sequences before progressing to finer cuts.

Key Features

• Swiss-pattern cut geometry for consistent tooth spacing and predictable stock removal
• Cut 0 coarseness for aggressive initial material removal on flat surfaces
• Equalling (rectangular) cross-section keeps opposing faces and edges cutting simultaneously
• 4-inch OAL with 1.75-inch length of cut for access to confined work areas
• Tang end accepts standard pin-vise or palm-grip file handles
• Needle-file classification for high-precision, close-tolerance hand filing

Compatibility

Designed as an OEM-style replacement or direct addition to Swiss-pattern needle file sets used in tool-and-die, jewelry, and precision machining applications. No handle included; accepts standard tang-type file handles sold separately.

Installation Notes

Hand files are installed by pressing the tang into a compatible handle before use - never operate a tang file without a handle, as the exposed tang is a puncture hazard. Secure the workpiece in a vise or fixture to prevent movement during filing. Apply consistent forward stroke pressure only; lifting on the return stroke extends file life. Inspect the file teeth before use and keep the file clean with a file card to maintain cutting efficiency.