MMM051144-84158 MFG #: 051144-84158
$0.73 / EA
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  • Offerings: Products
  • Brand Name: 3M™
  • Diameter: 5 IN
  • Arbor/Shank Size: No Hole
  • Grit/Grade: 30 micron/Fine
  • Abrasive Material: Aluminum Oxide
  • Attachment Type: PSA
3M™ micro finishing PSA film Type-D disc 366L is rated best in the 3M™ micro finishing line of film backed discs. It features micron graded aluminum oxide abrasive bonded to a durable polyester film backing to produce a fast cut rate and uniform finish on wood, solid surface composites, plastic, fiberglass, paint prep, coating and corrosion removal, primer, e-coat or metal. Load resistant coating provides greater efficiency and longer product life. Open coat construction provides aggressive cut and reduced loading. We gave these discs an anti-load coating and open coat surface to increase efficiency and product life by minimizing loading. The abrasive is resin bonded and supports disc flexibility without sacrificing durability and reliable performance under high heat and pressure. To complement the effective abrasive action, the polyester film backing flexes to help achieve a consistent finish over contours and offers greater tear resistance than comparable paper products, making it ideal for high production environments. And the pressure sensitive adhesive (PSA) provides easy attachment, holds the disc securely in place during use and removes cleanly from the backup pad (sold separately). Designed for use with orbital and random orbital sanders, this disc comes in a range of micron grades for complete multi-step sanding and finishing. Polyester film backing provides an aggressive cut with uniform finish. Our 3M™ micro finishing PSA film disc 366L features precision, micron graded aluminum oxide, which is a popular choice among industrial professionals because of its fast cut rate and long life. This mineral makes a tough, durable abrasive that self fractures to expose fresh cutting edges, whereas traditional natural abrasives dull more quickly. Due to its fast cut rate, hardness and strength, it is widely used in grinding applications in addition to sanding and finishing applications. Aluminum oxide is suitable for a wide variety of materials in both woodworking and metalworking, including ferrous alloys. Sanding discs cut better and last longer when dust isn't clogging the cutting surface of the abrasives. Open coat construction means the abrasive grains are placed with space between them to help evacuate sawdust and other sanding debris and avoid clogging the cutting edge of the grains. The load resistant coating also allows the disc to continue cutting even when sanding softwoods, paints and other materials that would, otherwise, clog the disc and hinder sanding ability. Additionally, the open coat feature provides a more aggressive cut than a comparable closed coat abrasive of the same grade. All of this adds up to increased productivity and reduced material consumption. Our 3M™ sanding discs come in a variety of forms to fit various power tools and disc pads. These high quality abrasive products come ready to use with a pressure sensitive adhesive coating on the backside so they conveniently press on to a backup pad or hand pad and remove cleanly, leaving an uncontaminated surface for the next sheet or disc
  • Type
  • Overview
  • Manufacturer Name
  • Bond Type
  • Backing Material
  • Applicable Materials


  • Precision, micron graded aluminum oxide abrasive offers a fast cut, long life, and uniform finish on many substrates
  • Durable polyester film backing provides flexibility for consistent finishing on contoured surfaces
  • Pressure sensitive adhesive backing allows quick attachment and clean removal for multi-step finishing processes
  • Open coat construction provides aggressive cut and reduced loading
  • Load resistant coating prevents dust and debris from clogging the disc
  • Adhesive backing for easy attachment


  • AOEM
  • Composite
  • Marine
  • Paint Preparation
  • Woodworking
  • Cabinetry
  • Custom Woodworking and Millwork
  • Furniture
  • Primary Wood
  • Paint Preparation
  • Coating
  • Corrosion Removal and Panel Processing
3 mil Polyester Film
Carbon Steel, Composite, Gelcoat, Hardwood, Metal, Paint, Primer, Softwood, Solid Surface, Topcoat and Wood