- 5" diameter disc with 8 universal vacuum holes is compatible with 5- and 8-hole random orbit sander.
- Hook-and-loop abrasive discs can be removed and reattached multiple times with no loss of adhesion, which can increase abrasive disc life.
- Aluminum oxide grit is a common choice for general-purpose grinding of wood, metal, fiberglass, and plastic, and is more durable than silicon carbide grit.
- Zinc stearate coating prevents clogs from forming and extends the life of the abrasive.
- A-weight paper backing is the lightest weight and most flexible paper backing option, and provides a more consistent finish than fiber or cloth backings.
The Norton Hook & Sand aluminum-oxide coated 5" abrasive disc has a hook-and-loop mounting system for quick disc changes
and 8 universal vacuum holes for use with a 5- or 8-hole random orbit sander. Abrasive discs with hook-and-loop
attachments don't require mounting tools, don't lose adhesion, and stay tightly attached to the sander for quick and
easy grit changes during the project. The aluminum oxide grit is one of the most common choices for general purpose
grinding of wood, metal, fiberglass, and plastic, 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 disc 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 paper backing conforms to contours and delivers a more consistent finish than fiber or
cloth backings. The backing is made from A-weight paper, which is the lightest and most flexible of the paper backing
options for maximum conformability.
Recommended Grit Sizes
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220 grit (very fine) For sanding bare, primed, and sealed surfaces for a consistent fine finish
150 grit (fine) For finishing surfaces or cleaning bare surfaces
120 or 100 grit (medium) For light material removal and smoothing base surfaces
80 or 60 grit (coarse) For moderate material removal and removing surface defects
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.
