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3M™ Hookit™ Microfinishing Film Disc 366L

34  Products
  • Aluminum oxide abrasive offers a fast cut, long life, and professional performance on many surfaces
  • Durable polyester film backing enables close-tolerances and consistent finish
  • Hookit™ hook and loop backing allows quick attachment and removal for multi-step finishing processes
  • Load-resistant coating prevents dust and debris from clogging the disc
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Overall Diameter (Imperial)
Center Hole Diameter
Max RPM
Equipment - Machines
Micron Grade
34 Products Available
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 Overall Diameter (Imperial), Center Hole Diameter, Max RPM, Equipment - Machines and Micron Grade
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Specifications
Attribute Name
Value
Application
Finishing, Sanding
Application Category
Orbital Sanding
Attachment Type
Hook & Loop
Backing Material
Polyester Film
Backing Weight
3MIL
Brand
Hookit™
Center Hole Diameter
0.68 in, 0.69 in
Center Hole Diameter (Metric)
17.272 mm
Color
Blue, Green, Orange, Purple, Red, Blue, Green, Maroon, Orange, Purple, Red
Equipment - Machines
Random Orbital Sanders
Form Type
Scalloped, Vacuum
For Use On
Carbon Steel, Composites, Gelcoat, Hardwood, Metal, Paint, Primer, Softwood, Solid Surface, Topcoats, Wood
Industries
AOEM, Composite, Marine, Paint Preparation, Woodworking
Max OPM
12000
Max RPM
10000, 12000, 15000
Micron Grade
100 μm, 120 μm, 15 μm, 150 μm, 180 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 80 μm
Mineral Type
Aluminum Oxide
Number of Holes
3, 4, 6, 8
Number of Vacuum Holes
8
Overall Diameter (Imperial)
1.375 in, 3 in, 4.331 in, 5 in, 6 in
Overall Diameter (Metric)
110 mm, 127 mm, 152.4 mm, 34.925 mm, 76.2 mm, 110 mm, 127 mm, 152.4 mm, 34.925 mm, 76.2 mm
Position
Best
Product Form
Disc
Sub Industries
Cabinetry, Custom Woodworking and Millwork, Furniture, Primary Wood and Panel Processing
Substrate
Carbon Steel, Composites, Gelcoat, Hardwood, Metal, Paint, Primer, Softwood, Solid Surface, Topcoats, Wood
Product Details
  • Aluminum oxide abrasive offers a fast cut, long life, and professional performance on many surfaces
  • Durable polyester film backing enables close-tolerances and consistent finish
  • Hookit™ hook and loop backing allows quick attachment and removal for multi-step finishing processes
  • Load-resistant coating prevents dust and debris from clogging the disc
  • Available in both open coat and dust control

3M™ Hookit™ Microfinishing Film Disc 366L is rated Best in the 3M Microfinishing line of film backed discs. It features premium, 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.

3M™ Hookit™ Microfinishing Film Type D Disc 366L
We gave these discs a load resistant coating 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 3M™ Hookit™ attachment and removal system holds the disc securely during use and provides easy disc change out. Designed for use with orbital and random orbital sanders, this disc comes in a range of grades for complete multi-step sanding and finishing.

Our 3M™ Hookit™ Microfinishing 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.

Whether the job requires a random orbital or rotary sander, buffer, grinder, drill, finishing sander or other power tool, hook-and-loop products allow the operator to focus more on the task and less on tooling. Abrasive products with hook-and-loop backing, including 3M™ Hookit™ products, are manufactured with loop material that attaches to a backup pad, sold separately, where tiny hooks firmly engage the loops. Attachment is quick, easy, and secure during use. Sanding, finishing, and surface conditioning products with the hook-and-loop attachment and removal system provide an efficient way to work through multi-step finishing processes and can be used again and again for the life of the abrasive.

Aluminum oxide is suitable for a wide variety of materials in both woodworking and metalworking, including ferrous alloys.
Our 3M sanding discs come in a variety of forms to fit various power tools and disc pads. Hook and Loop sanding discs are designed to be used with a random orbital sander, a handheld sanding machine that rotates the disc in a random pattern to prevent swirl marks from forming on the surface of the workpiece. The sander is fitted with a backup pad (sold separately) to which the sanding disc is attached. Hook-and-loop discs are quick and easy to change when switching from one grade to another, and can be reused again and again until worn out; whereas adhesive-backed discs are typically discarded after one use because the adhesive backing will not re-adhere a second time.

Learn More About 3M Abrasive Systems Random Orbital Abrasive Disc Portfolio (PDF, 1.4 Mb)

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Large Volume Order

If you are considering a large purchase of this or other 3M Abrasive products our inside sales team is ready to help by providing additional information and options that our industrial customers typically seek when making abrasive procurement decisions. Our technical expertise, customer support, and global capabilities put us in a unique position to address your biggest challenges, and we’ll do our best to prove that we should be your abrasive supplier of choice.


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