3M™ Hookit™ Microfinishing Film Disc 366L, 30 Mic 3MIL, Type D, 6 in x NH, D/F 6HL, Die 600HZ, 50/Pac, 500 ea/Case

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.
Special Price $1.90 Regular Price $2.23
UPC 00051111611159
3M ID 7010325578
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These discs feature 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.

The 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.

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.


  • 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
More Information
3M ID 7010325578
Keywords 3M, Hookit, Microfinishing Film Disc, 366L, aluminum oxide abrasive, durable polyester film backing, fast cut-rate, uniform finish, wood sanding, solid surface composites, plastic sanding, fiberglass sanding, paint prep, coating removal, corrosion removal, primer sanding, e-coat sanding, metal sanding, load-resistant coating, high-production environments, orbital sander, random orbital sanders, hook-and-loop attachment, easy disc change, multi-step finishing processes, woodworking, metalworking, ferrous alloys, industrial professionals, sanding and finishing, surface conditioning, aerospace, commercial vehicles, manufacturing assembly, personal recreation vehicles, two-wheel vehicles.
Global Product Hierarchy Abrasives > Abrasive Discs > Film Discs
Abrasive Material Aluminum Oxide
Application Finishing, Sanding
Backing Material Polyester Film
Backing Thickness (Imperial) 3.0 mil
Backing Type D
Center Hole Diameter (Imperial) 0.0 NP
Center Hole Diameter (Metric) 0.0 NP
Color Family Green
Grit Non Pertinent
Product Color Green
Product Number 366L
Product Type simple
Quantity 0
Trademark 1 3M™
Trademark 2 Hookit™
Country of Origin United States
SAP Shelf Life In Days 1825
Base - Billing Unit EA
Base - Metric Gross Weight 6.804 G
Base - Metric Height Dimension 2.54 MM
Base - Metric Length Dimension 152.4 MM
Base - Metric Width Dimension 152.4 MM
Base - Item Quantity 1
Base - Unit EA
Unit of Use - Billing Unit EA
Unit of Use - Customary Cubic Dimension 3.6004009015892047 ci
Unit of Use - Customary Gross Weight 0.015000252319059071 lbs
Unit of Use - Customary Net Weight 0.014991433828571675 lbs
Unit of Use - Customary Height Dimension 0.1 in
Unit of Use - Customary Length Dimension 6.0 in
Unit of Use - Customary Width Dimension 6.0 in
Unit of Use - Metric Cubic Dimension 0.059 CDM
Unit of Use - Metric Net Weight 6.8 G
Unit of Use - Metric Height Dimension 2.54 MM
Unit of Use - Metric Length Dimension 152.4 MM
Unit of Use - Metric Width Dimension 152.4 MM
Unit of Use - Item Quantity 1
Unit of Use - Total Unit Quantity 1
Unit of Use - Previous Packaging Level Quantity 1
Unit of Use - Item Unit EACH
Unit of Use - Unit EA
Inner - Billing Unit EA
Inner - Customary Cubic Dimension 170.59700261132807 ci
Inner - Customary Gross Weight 0.7799954836100969 lbs
Inner - Customary Net Weight 0.7495716914285838 lbs
Inner - Customary Height Dimension 4.7637795275590555 in
Inner - Customary Length Dimension 5.984251968503937 in
Inner - Customary Width Dimension 5.984251968503937 in
Inner - Metric Cubic Dimension 2795.584 CCM
Inner - Metric Net Weight 340.0 G
Inner - Metric Height Dimension 12.1 CM
Inner - Metric Length Dimension 15.2 CM
Inner - Metric Width Dimension 15.2 CM
Inner - Item Quantity 50
Inner - Total Unit Quantity 50
Inner - Previous Packaging Level Quantity 50
Inner - Item Unit EACH
Inner - Previous Packaging Level Unit EACH
Inner - Unit PAK
Shipper - Billing Unit EA
Shipper - Customary Cubic Dimension 1376.6351312230183 ci
Shipper - Customary Gross Weight 8.437972622864004 lbs
Shipper - Customary Net Weight 7.495716914285838 lbs
Shipper - Customary Height Dimension 7.0078740157480315 in
Shipper - Customary Length Dimension 14.015748031496063 in
Shipper - Customary Width Dimension 14.015748031496063 in
Shipper - Metric Cubic Dimension 22559.008 CCM
Shipper - Metric Weight 3827.4 G
Shipper - Metric Net Weight 3400.0 G
Shipper - Metric Height Dimension 17.8 CM
Shipper - Metric Length Dimension 35.6 CM
Shipper - Metric Width Dimension 35.6 CM
Shipper - Item Quantity 500
Shipper - Total Unit Quantity 500
Shipper - Previous Packaging Level Quantity 10
Shipper - Previous Packaging Level Unit PACK
Shipper - Item Unit EACH
Shipper - Unit CS
Pallet - Billing Unit EA
Pallet - Customary Cubic Dimension 90803.33121296164 ci
Pallet - Customary Gross Weight 500.4493351596721 lbs
Pallet - Customary Net Weight 404.76871337143524 lbs
Pallet - Customary Height Dimension 44.881889763779526 in
Pallet - Customary Length Dimension 48.031496062992126 in
Pallet - Customary Width Dimension 42.125984251968504 in
Pallet - Metric Cubic Dimension 1.488 M3
Pallet - Metric Net Weight 183.6 KG
Pallet - Metric Height Dimension 1.14 M
Pallet - Metric Length Dimension 1.22 M
Pallet - Metric Width Dimension 1.07 M
Pallet - Item Quantity 27000
Pallet - Total Unit Quantity 27000
Pallet - Previous Packaging Level Quantity 54
Pallet - Previous Packaging Level Unit BOX
Pallet - Item Unit EACH
Pallet - Unit PAL
Pallet - Pallet Layer Quantity 6
Pallet - Shipping Container Per Layer Quantity 9
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