Grobet 31.640 Swiss Pattern File 6.25 in Three Square Cut 2

Product Description

The GROBET 31.640 is a Swiss-pattern needle file with a three-square (triangular) cross-section, designed for precision filing in tight angles and internal corners. It features a Cut 2 tooth configuration, which delivers a medium-fine cut suited for deburring, fitting, and light stock removal on metal workpieces. With an overall length of 6.25 inches and a 3-inch length of cut, this file is sized for controlled hand work requiring accuracy. The tang-style end accepts a separately sourced handle. It is used by machinists, toolmakers, plumbers, HVAC technicians, and electricians who need to dress metal parts, clean threads, or fit components to close tolerances.

This file is suited for shop and field use wherever precision hand filing is required. Common applications include deburring copper and steel tubing, cleaning burrs from conduit knockouts, fitting valve seats, and dressing threads on fittings and fasteners. The triangular profile allows access to 60-degree angles and interior corners that flat or half-round files cannot reach. It is appropriate for both bench work and on-site service calls across plumbing, HVAC, electrical, and general mechanical trades.

Key Features

• Three-square (triangular) cross-section for filing 60-degree angles and internal corners
• Cut 2 tooth configuration for medium-fine stock removal and deburring
• 6.25-inch overall length with a 3-inch length of cut for controlled reach
• Swiss-pattern tooth geometry for consistent, precise cutting action
• Tang end compatible with standard file handles (handle sold separately)
• Needle file class sizing for detail and precision work

Compatibility

Designed as a general-purpose Swiss-pattern needle file for use on ferrous and non-ferrous metals in plumbing, HVAC, electrical, and mechanical service applications.

Installation Notes

This file is a hand tool and does not require power isolation before use, though work should be secured in a vise or fixture to prevent slipping. Always fit a proper handle to the tang before use to protect the hand and maintain control. Keep files dry and free of oil to preserve cutting performance. Never use a file as a pry bar or striking tool, as the hardened steel is brittle and can shatter under lateral force.