Nicholson 21842NN Mill File 14.5 in Single Bastard Cut

Product Description

The NICHOLSON 21842NN is an American-pattern mill file designed for precision metal filing, deburring, and surface finishing on ferrous and non-ferrous metals. At 14.5 inches overall length with a 10-9/16 inch cut length, this single-cut bastard file removes material at a controlled rate, making it a reliable choice for draw-filing, sharpening saw teeth, and smoothing machined surfaces. The tang end accepts a standard file handle for secure grip during extended use. With a width of 1.14 inches and a thickness of 0.3 inches, the profile suits flat and slightly curved workpiece surfaces.

This file suits trade professionals and maintenance technicians working on HVAC equipment, piping, conduit edges, and general metal fabrication. The bastard cut provides medium-coarse stock removal appropriate for initial shaping passes before finishing with a finer cut. Single-cut tooth geometry produces a smoother finish compared to double-cut files and generates lower cutting forces, which is useful when draw-filing pipe ends, burring copper tube, or dressing sheet metal edges in the field.

Key Features

• Single-cut, bastard coarseness for controlled medium-coarse material removal on metal
• 14.5-inch overall length with 10-9/16-inch active cut length for reach on larger workpieces
• American-pattern mill profile suits flat surfaces, saw sharpening, and draw-filing
• Tang end accepts standard replacement file handles sold separately
• Non-flexible construction maintains consistent tooth engagement across the full cut length
• Rated for metal material applications including ferrous stock and general fabrication

Compatibility

Designed as an OEM-style replacement or direct-use mill file compatible with standard American-pattern file handles. Suitable for general metal filing applications across HVAC, plumbing, electrical, and mechanical trades wherever a bastard-cut single mill file is required.

Installation Notes

Always fit a handle onto the tang before use to prevent hand injuries during filing strokes. Secure the workpiece in a vise or clamp before filing to ensure control and accurate material removal. Keep the file clean of metal filings using a file card or wire brush to maintain cutting efficiency. Do not use this file on hardened steel, as contact with material harder than the file teeth will cause rapid dulling or tooth damage.