The Crescent Nicholson 02147N is a professional grade round chainsaw file engineered for efficient sharpening of chainsaw cutters. Its precision American-pattern knurl-cut teeth help restore a keen edge quickly, while its durable steel construction ensures long-lasting performance. Ideal for both professional loggers and DIY homeowners.

Key Features

• 8″ file length (9.68″ overall) with a ¼″ diameter for ideal leverage and control.
• American-pattern knurl-cut teeth deliver aggressive, efficient sharpening.
• Tang-ready design lets you add a handle for better grip and precision.
• Dual/smooth cut option available for finer tuning after initial sharpening.
• Trustworthy Crescent/Nicholson build quality with a 1-year limited warranty.
• Boxed or carded packaging available; bulk cartons also provided.

Specifications

• File Length: 8″
• Overall Length: 9.68″
• Diameter: 0.237″ (¼″)
• Cut Type: Knurl-cut (American pattern); double/smooth variants also offered
• Material: High-carbon steel
• Handle: Tang included; optional handles sold separately
• Weight: ~0.10 lb
• Finish: Natural steel
• Warranty: 1 year limited
• Packaging: Boxed, carded, or bulk six-packs

Usage Instructions

• Maintain 20°–45° filing angle against the beveled surface of each cutter.
• File from inside to outside, alternating sides for left- and right-hand cutters.
• After every 2–3 sharpenings, check depth gauge height; ensure 0.020″–0.030″ clearance.
• Tension the chain firmly before filing to prevent vibration and ensure even removal.
• For smoother finishes, use the double/smooth-cut variant after initial pass.

Typical Applications

• Sharpening ¼″-diameter chain cutters, often found on 0.325″-pitch chains.
• Used with or without file guides for professional-grade edge restoration.
• Ideal for lumberjacks, arborists, landscapers, or DIY chainsaw owners keeping equipment sharp.
• Suitable for intermediate to coarse metal removal, prepping teeth for smoother finishes.