Nicholson 21842HNN Mill File 12 Inches Single Cut Bastard

Product Description

The NICHOLSON 21842HNN is a 12-inch American-pattern mill file designed for metal filing, deburring, and surface finishing tasks in professional trade and shop environments. It features a single-cut tooth pattern with a bastard cut coarseness, which removes material at a controlled rate while leaving a reasonably smooth finish on workpiece surfaces. The file measures 1-5/32 inches wide and 7/32 inches thick across the cutting face, and it comes fitted with an ergonomic handle for secure grip during extended use. At 0.2 pounds, it is lightweight enough for repetitive single-hand work without fatigue over a full shift.

This file is suited for general metalworking applications including drawfiling, sharpening saw blades, cleaning up weld beads, smoothing machined edges, and fitting parts in fabrication or maintenance work. The mill file profile and single-cut pattern make it a standard choice for machinists, millwrights, pipefitters, and maintenance technicians who regularly work ferrous and non-ferrous metals on the bench or in the field. The bastard cut is the most commonly specified coarseness for initial stock removal and general-purpose shaping on mild steel, aluminum, and similar metals.

Key Features

• 12-inch cut length provides ample stroke surface for efficient material removal on medium to large workpieces
• Single-cut tooth pattern delivers controlled stock removal with a smoother resulting finish compared to double-cut files
• Bastard cut coarseness balances cutting speed and surface finish for general-purpose metal shaping
• 1-5/32-inch wide by 7/32-inch thick profile suits flat surface and slot filing applications
• Ergonomic handle included, reducing hand fatigue during extended filing operations
• Non-flexible construction maintains rigidity and consistent contact across the full file face

Compatibility

Designed as a general-purpose American-pattern mill file for use on metal workpieces including mild steel, aluminum, brass, and similar materials in bench or field applications.

Installation Notes

Files are hand tools and do not require installation in the traditional sense, but proper use practices apply. Always inspect the handle for cracks or looseness before use, and ensure the tang is fully seated in the handle to prevent injury. Never use a file as a pry bar or hammer, as the hardened steel is brittle and can fracture. For safe material removal, secure the workpiece in a vise and maintain consistent forward stroke pressure, lifting the file on the return stroke to prevent premature tooth wear.