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Norton A259 3X Clamp & Sand Sheet, 3-2/3 x 9", Aluminum Oxide (Pack of 4)

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Product Specifications
Overall Width
3-2/3  inches
Construction Type
Coated
UNSPSC Code
31191500
Grit Material Type
Aluminum Oxide
Brand Name
Norton Abrasives - St. Gobain
Overall Length
9  inches

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3-2/3" x 9" P60 4 07660705318 B00755YS4C 8 $7.33 Buy Options

Key Features

  • 3-2/3 x 9" rectangular sandpaper sheet is suitable for clamp-on jitterbug sanders and for hand sanding
  • Recommended for sanding or grinding wood, metal, or fiberglass
  • Aluminum oxide grit is a common choice for general-purpose grinding of most materials and is more durable than silicon carbide grit
  • Zinc stearate coating prevents clogs from forming and extends the life of the abrasive
  • Fiber-reinforced C-weight paper backing combines the flexibility and lightness of C-weight paper with the strength of fiber for a backing that is edge tear-resistant and produces a consistent finish

Product Description

The Norton A259 3X Clamp & Sand 3-2/3 x 9" rectangular sanding sheet can be used for hand sanding and with clamp-on jitterbug sanders. The aluminum oxide grit is one of the most common choices for general purpose grinding of wood, metal, and fiberglass, and is more durable than silicon carbide grit. The abrasive has been treated with a water-based zinc stearate coating that prevents clogs from forming and can be used in wet sanding applications. The abrasive and bond do not contain dyes, so colors will not transfer to the workpiece. The sheet has an open coat, which resists clogging and promotes flexibility. Open coat abrasives produce a rougher finish when abrading difficult-to-sand materials because the abrasive grains are spaced farther apart than they are on a closed coat product. The fiber-reinforced C-weight paper combines the flexibility and lightness of paper with the strength of fiber to create an edge tear-resistant backing that delivers a consistent finish.

Recommended Grit Sizes

P150 grit (fine) For fine sanding a surface in preparation for priming, staining, or sealing
P100 grit (medium) For moderate-to-light material removal and stripping
P60 grit (coarse) For heavy material removal and shaping

Coated abrasives have individual abrasive grains spaced at a predetermined distance from one another. They are used for a variety of applications — from shaping a part to fine finishing, depending on grit size. Low grit numbers such as 40 are coarse and are used for removing excess material and shaping a part. High grit numbers such as 400 are rated as fine and help create a smooth surface finish. Closed coat abrasives are 100 percent covered with abrasive grains, which extends the abrasive's life, maximizes material removal, and achieves finer finishes on metals and hard materials than an open coat. Closed coats are only recommended for use with non-clogging materials. For open coat abrasives, 50 to 75 percent of the surface is evenly covered, which provides a rougher finish because the abrasive grains are spaced farther apart than on a fully coated product. The gritless spaces promote flexibility and resist clogging when abrading difficult-to-sand materials. The flexibility or rigidity of the abrasive product is also affected by the choice of backing material (either paper, cloth, or fiber). Paper backing, the most flexible backing option, contours to the workpiece and delivers a more consistent finish than fiber or cloth backings. Paper backings are categorized by weight from lightest to heaviest (A- to F-weight respectively). Cloth backings are slightly more rigid, durable, and tear resistant than paper backing, but can still withstand repeated flexing. Cloth backing is categorized by weight from lightest to heaviest (J-, X-, Y-, and H-weight respectively). Fiber backing is the strongest and most rigid backing option, and is recommended for aggressive material removal.

Norton Abrasives manufactures sanding, grinding, and polishing abrasives. The company, founded in 1885, meets International Organization for Standardization (ISO) standards 9000 and 14001 for quality and environmental management.

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