Nicholson 21853 Round Bastard Cut File 8 Inches

Product Description

The NICHOLSON 21853 is an American-pattern round file designed for material removal, deburring, and shaping in machining and metalworking applications. This single-cut, bastard-grade file measures 8 inches in overall length with a 5/16-inch diameter cutting surface. The tang end accepts a standard file handle, giving the technician a secure grip during use. Single-cut bastard files like this one are standard tools in metal fabrication shops, maintenance facilities, and field service kits where controlled material removal is required across ferrous and non-ferrous stock.

This file is suited for general machining tasks including enlarging holes, smoothing round openings, and fitting cylindrical surfaces. The round profile makes it effective for working inside curved cuts, pipe ends, and close-tolerance bores. The bastard cut provides an aggressive but controllable removal rate, making it appropriate for roughing passes before moving to finer finishing tools. Tradespeople in HVAC, pipefitting, and general mechanical maintenance commonly carry this file as part of a standard hand-tool set.

Key Features

• Round profile for shaping and enlarging curved surfaces and bores
• Bastard cut grade for efficient material removal on roughing passes
• Single-cut tooth pattern for controlled, directional filing action
• 8-inch cut length covers the full working surface of the file
• Tang end compatible with standard aftermarket and OEM file handles
• Rigid construction — no flex — for consistent contact and stroke control

Compatibility

Designed as a standard American-pattern round file suitable for use on ferrous and non-ferrous metals in general machining, fabrication, and maintenance applications.

Installation Notes

Files should always be fitted with a handle before use to prevent tang injuries. Secure the workpiece in a vise when practical to maintain consistent stroke control and reduce fatigue. Do not use this file on hardened steel surfaces harder than the file itself, as this will damage the teeth. Inspect the file for cracks or missing teeth before each use and replace if the cutting surface is worn smooth.