3M™ Cubitron™ II Hookit™ Clean Sanding Abrasive Disc 31478, 5 in (125 mm), 1000+ Grade, 50 Discs/Carton, 4 Cartons/Case

3M™  Cubitron™ II Hookit™ Clean Sanding Abrasive Disc 737U combines the highest 3M technology for automotive repair. Its long-lasting triangular shaped grain and multi-hole pattern for superior dust extraction make the disc ideal for a long disc life. The very wide range of available grades offer discs for coarse body work up to fine sanding of blending areas. The 3M™ Hookit™ system makes for quick disc change-outs.
Special Price $53.31 Regular Price $62.72
UPC 00068060060945
3M ID 7100330627
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Cuts 30% Faster. Lasts 2x as Long

3M developed the 3M™ Cubitron™ II Hookit™ Clean Sanding Abrasive Discs 737U to deliver a very fast, consistent cut and long disc life during key stages in auto body repair. It features 3M™ Precision-Shaped Grain technology — triangular-shaped, electrostatically oriented grains form sharp peaks that slice, rather than plow, through paint and body filler. This grain cuts 30% faster than traditional premium abrasives. As the individual grains wear, fresh abrasive is exposed to continually present a sharp cutting surface. This makes the cut more consistent and prolongs the life of the disc. Cubitron™ II Hookit™ Clean Sanding Abrasive Discs 737U is ideal for feather-edging, as a final sanding step before priming, or during prep before blending. A multi-hole pattern offers excellent dust extraction to make the disc ideal for paint removal, rough body filler shaping, fine feather-edging or final prep.

About 3M™ Cubitron™ ? II and Precision-Shaped Grain

3M™ Cubitron™ II products have raised the bar for high-performing abrasives. They utilize 3M™ Precision-Shaped Grain (PSG), which outcuts and outlasts conventional ceramic industrial abrasives and requires less grinding force to achieve superior performance. The result is that operators can grind faster and complete ore parts per disc.

To create PSG, 3M engineers used proprietary technology to form abrasive grains into triangular structures and electrostatically orient them on the backing to form sharp peaks that maximize cutting potential. These peaks slice cleanly through metal like a knife through butter, rather than gouging or plowing as traditional abrasives do. As the grains wear, they continually expose fresh, sharp mineral. As a result, PSG last 2x as long as conventional ceramic abrasives, ensuring extended high performance in production applications.

About 3M™ Hookit™ Attachment

The 3M™ Hookit™ attachment system is designed for work spaces and applications where adhesive backed abrasives may become contaminated by dust, dirt or debris. It features a hook-and-loop function which makes disc attachment, removal, and re-attachment clean and easy. 3M™ Hookit™ abrasives have a loop backing of the type most commonly used in everyday hook-and-loop applications. It attaches to the small hooks on the backing of any 3M™ Hookit™ backup pad. it's simple: just attach the disc and start sanding. The disc removes just as cleanly and easily, and facilitates the use and re-use of the disc for maximum product life.

About 3M™ Clean Sanding

The multi-hole pattern on 3M™ Clean Sanding discs evacuates dust better than 5- or 6-hole products—significantly increasing cut-rate and disc life. When used with a 3M™ Clean Sanding Disc Pad, the disc holes do not require alignment with the pad holes, making switching the discs fast, easy, and convenient. You can also pair Clean Sanding abrasives with Clean Sanding disc pads for use on a central-vacuum-ready sander.


  • Features 3M™ Precision-Shaped Grain, triangular-shaped grains that cut at least 30% faster and last at least 30% longer than other conventional ceramic abrasives
  • Extremely sharp precision-shaped grain provides longer life than conventional ceramic abrasives
  • Sharper cutting surface means less pressure is required
  • Clean Sanding multi-hole pattern delivers excellent dust extraction
  • 3M™ Hookit™ hook-and-loop attachment makes for fast disc change-outs
  • Long lasting,fast-cutting abrasive disc available in a wide range of grades
More Information
3M ID 7100330627
Part number 31478
Keywords car scratch repair, paint removal, paint preparation, denibbing, primer sanding, abrasives for plastic repair, Filler sanding, 3M abrasives, cubitron, car dent repair,
Global Product Hierarchy Abrasives > Abrasive Discs > Paper Discs
Abrasive Material Precision Shaped Ceramic
Application Blending, Featheredging, Paint Removal, Paint Sanding, Paint Stripping, Primer Sanding, Random Orbital Sanding, Rough Feather Edge, Sanding, Sanding Filler, Shape and Sand Filler or Putty, Surface Preparation
Backing Material Paper
Backing Weight C Weight
Bond Type Resin
Center Hole Diameter (Imperial) 0.0 NP
Center Hole Diameter (Metric) 0.0 NP
Color Family Purple
Grit 1000+
Product Color Purple
Product Number 737U
Product Type simple
Quantity 0
Trademark 1 3M™
Trademark 2 Cubitron™
Country of Origin United States
SAP Shelf Life In Days 1825
Base - Billing Unit EA
Base - Metric Gross Weight 3.991 G
Base - Item Quantity 1
Base - Unit EA
Unit of Use - Billing Unit EA
Unit of Use - Customary Cubic Dimension 2.1000711292761167 ci
Unit of Use - Customary Gross Weight 0.008798648883798464 lbs
Unit of Use - Customary Net Weight 0.008798648883798464 lbs
Unit of Use - Metric Cubic Dimension 34.414 CCM
Unit of Use - Metric Net Weight 3.991 G
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
Consumer - Billing Unit EA
Consumer - Customary Cubic Dimension 65.65898564867996 ci
Consumer - Customary Gross Weight 0.5349979762666642 lbs
Consumer - Customary Net Weight 0.4399324441899232 lbs
Consumer - Customary Height Dimension 2.5 in
Consumer - Customary Length Dimension 5.124803149606299 in
Consumer - Customary Width Dimension 5.124803149606299 in
Consumer - Metric Cubic Dimension 1075.958 CCM
Consumer - Metric Net Weight 199.55 G
Consumer - Metric Height Dimension 6.35 CM
Consumer - Metric Length Dimension 13.017 CM
Consumer - Metric Width Dimension 13.017 CM
Consumer - Item Quantity 50
Consumer - Total Unit Quantity 50
Consumer - Previous Packaging Level Quantity 50
Consumer - Previous Packaging Level Unit EACH
Consumer - Item Unit EACH
Consumer - Unit KAR
Shipper - Billing Unit EA
Shipper - Customary Cubic Dimension 420.02099949081787 ci
Shipper - Customary Gross Weight 2.4449992401768132 lbs
Shipper - Customary Net Weight 1.7597297767596929 lbs
Shipper - Customary Height Dimension 6.3 in
Shipper - Customary Length Dimension 11.3 in
Shipper - Customary Width Dimension 5.9 in
Shipper - Metric Cubic Dimension 6882.911 CCM
Shipper - Metric Weight 1109.033 G
Shipper - Metric Net Weight 798.2 G
Shipper - Metric Height Dimension 16.002 CM
Shipper - Metric Length Dimension 28.702 CM
Shipper - Metric Width Dimension 14.986 CM
Shipper - Item Quantity 200
Shipper - Total Unit Quantity 200
Shipper - Previous Packaging Level Quantity 4
Shipper - Previous Packaging Level Unit CTNS
Shipper - Item Unit EACH
Shipper - Unit CS
Pallet - Billing Unit EA
Pallet - Customary Cubic Dimension 98980.51292165577 ci
Pallet - Customary Gross Weight 514.9998444638741 lbs
Pallet - Customary Net Weight 344.9065953203754 lbs
Pallet - Customary Height Dimension 49.1 in
Pallet - Customary Length Dimension 48.0 in
Pallet - Customary Width Dimension 42.0 in
Pallet - Metric Cubic Dimension 1.622 M3
Pallet - Metric Net Weight 156.447 KG
Pallet - Metric Height Dimension 124.714 CM
Pallet - Metric Length Dimension 121.92 CM
Pallet - Metric Width Dimension 106.68 CM
Pallet - Item Quantity 39200
Pallet - Total Unit Quantity 39200
Pallet - Previous Packaging Level Quantity 196
Pallet - Previous Packaging Level Unit BOX
Pallet - Item Unit EACH
Pallet - Unit PAL
Pallet - Pallet Layer Quantity 7
Pallet - Shipping Container Per Layer Quantity 28
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