Nicholson 37947 Swiss-pattern Three Square Needle File

Product Description

The NICHOLSON 37947 is a Swiss-pattern needle file in a three-square (triangular) profile, designed for precision filing work in tight spaces and on detailed surfaces. With an overall length of 6.25 inches and a 3-inch length of cut, this file delivers controlled material removal where standard files cannot reach. The Cut 0 designation indicates a coarse tooth spacing within the Swiss-pattern grade range, making it suitable for faster stock removal on metal, plastic, or composite workpieces. Tang-style construction allows use with a compatible file handle. Machinists, tool-and-die workers, jewelers, and metal fabricators rely on Swiss-pattern needle files for close-tolerance finishing and deburring tasks.

This file is used in precision metalworking, toolmaking, die and mold work, and general fabrication where sharp interior angles, narrow grooves, or V-shaped channels require a triangular cross-section. The 3-inch cutting length and 0.16-inch face width allow access to confined geometry on workpieces. It is appropriate for bench work in machine shops, job shops, and tool rooms, as well as field use by trades professionals who need a compact, fine-control file for deburring or fitting components.

Key Features

• Swiss-pattern needle file construction for high-precision material removal
• Three-square (triangular) cross-section for filing V-grooves, sharp corners, and internal angles
• Cut 0 tooth pattern for faster stock removal within the needle file grade range
• 6.25-inch overall length with a 3-inch length of cut for controlled reach
• 0.16-inch face width and 0.16-inch thickness for access to narrow features
• Tang-style end accepts a standard file handle (sold separately)

Compatibility

Designed for use with standard tang-style file handles compatible with needle file shanks. Suitable for filing ferrous and non-ferrous metals, plastics, and composites in bench and field applications.

Installation Notes

A file handle should be fitted to the tang before use to ensure a secure grip and reduce the risk of hand injury from the exposed tang. Always wear appropriate personal protective equipment, including safety glasses, when filing. Apply consistent, controlled strokes in one direction for best results and longest file life. Inspect the file before use and discard if teeth are worn, broken, or clogged beyond cleaning.