Grobet 31.450 Swiss-pattern Barrette Needle File 4 in Cut 0

Product Description

The GROBET 31.450 is a Swiss-pattern barrette needle file designed for precision filing and finishing work in tight or hard-to-reach areas. At 4 inches overall length with a 1.75-inch length of cut, this file delivers controlled material removal on metal surfaces where accuracy matters. The barrette profile is flat on one side with a safe (uncut) back edge, allowing filing along one face without scoring adjacent surfaces. Cut 0 provides a coarse tooth pattern suited for faster stock removal while still maintaining the fine tolerances expected from Swiss-pattern tooling. It is used by machinists, jewelers, toolmakers, and skilled tradespeople requiring precision hand-file work.

This file is well suited for detail work in metalworking, watchmaking, jewelry fabrication, and precision instrument repair. The needle-file scale and barrette shape make it practical for filing slots, grooves, and flat internal surfaces where a larger file would not fit. At 0.16 inches wide and 0.06 inches thick, it handles confined geometry without sacrificing cutting control. The tang end is designed to accept a separately sourced file handle if grip preference requires one, though it ships without a handle.

Key Features

• Barrette profile with one safe edge - files one surface without marking adjacent faces
• Cut 0 tooth pattern for faster material removal in precision needle-file scale
• Swiss-pattern construction for consistent tooth spacing and predictable cutting action
• Needle-file size at 4 inches OAL fits confined workspaces and tight internal geometry
• Tang end accepts standard file handles for added control when needed

Compatibility

Designed as a standard Swiss-pattern needle file for use with metals in precision hand-filing applications. Compatible with most standard file handles sized for needle files.

Installation Notes

Needle files are hand tools and do not require power or mechanical installation. Secure the workpiece in a vise or fixture before filing to maintain accuracy and prevent injury. If a handle is used, ensure it is properly seated on the tang before applying pressure. Do not use needle files on hardened steel above the file's rated hardness range, and never apply lateral bending force to the file body.