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Norton Product Tiers

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Best Best

Our BEST tier products are designed for the customer who is seeking the highest productivity at the lowest total cost.

Better Better

Our BETTER tier products provide an excellent blend of performance and price.

Good Good

Our GOOD tier products promise the highest quality you expect from the Norton name with a low initial price.

Norton 57A Diamond-Shaped File

For the best blend of cut rate and finish, choose the Norton India AO Diamond-Shaped Files, which are ideal for cleaning acute angles in dies and molds and stoning geometric chasers and sewing machine feeds. The aluminum oxide abrasive produces strong, long-lasting edges and uniform finishes without wearing down the shape of the file. Choose the coarse grit to quickly restore edges, the medium grit for general edge sharpening needs, and the fine grit for the sharpest edges.

Icon of a abrasive
Abrasive AO
Icon of a wheel
Wheel Type Type 90

Features and benefits

India, our smooth cutting aluminum oxide abrasive produces a strong, keen, long-lasting edge and is the choice for the best blend of cut rate and finish

Perfect for cleaning acute angles in dies and molds, and for stoning geometric chasers and sewing machine feeds

Coarse grit quickly restores worn edges; medium grit produces the average edge needed for most tools; and fine grit produces an even sharper edge

Designed to retain their shape while imparting a uniform finish

Part Specifications

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Length
Width
Thickness
Grit Size
Sanding Grade
Inventory Type
External Spec
Subshape
Abrasive
Wheel Type
Part Number
4 in 9/16 in 3/16 in 100 Grit Coarse Stock COARSE INDIA CT134 Aluminum Oxide Type 90 61463686720

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