Crescent Nicholson 21862nn Black Diamond Flat Bastard File, Double-cut, 8 In.

The Nicholson 21862NN Black Diamond Flat Bastard File is a hand file designed for rapid removal of metal. Its rectangular cross-section and American pattern make it an essential tool for machinists, machinery builders, ship and engine builders, and repair professionals who need efficient metal stock removal and shaping.

This 8-inch file features a double-cut design on the sides paired with single cuts on the edges, delivering both speed and control in metalworking applications. The slight taper toward the point allows easy entry into slots and tight spaces, making it versatile for smoothing and sharpening straight surfaces.

Features and Benefits

• Double-Cut Sides with Single-Cut Edges: The combination of cutting patterns on the sides and edges provides fast yet controlled filing action for efficient metal removal.
• Rectangular Cross-Section: Ideal for smoothing and sharpening flat surfaces and creating straight-edged work on metal stock.
• Tapered Point Design: The slight width taper toward the tip enables easy access into slots, grooves, and confined spaces.
• American Pattern: Designed for use by machinists, machinery builders, and professional repair workers requiring rapid metal removal.

Specifications

• Brand: Nicholson
• Model: 21862NN
• Length: 8 inches
• File Type: Flat Bastard File
• Cross Section: Rectangular
• Cut Pattern: Double-cut on sides, single-cut on edges
• Design Standard: American pattern