3M™ Cubitron™ II Hookit™ Clean Sanding Abrasive Disc 737U, 31375, 8 in, 40+, 25 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 $162.16 Regular Price $190.78
UPC 00051131313750
3M ID 7100073547
Packaging Carton
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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 7100073547
Part number 31375
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 40+
Product Color Purple
Product Number 737U
Product Type simple
Quantity 0
Trademark 1 3M™
Trademark 2 Cubitron™
Country of Origin United States
Sales Unit EA
SAP Shelf Life In Days 1825
Base - Billing Unit EA
Base - Customary Width Dimension 8.0 INCH
Base - Metric Gross Weight 38.8 G
Base - Metric Width Dimension 0.203 M
Base - Item Quantity 1
Base - Unit EA
Unit of Use - Billing Unit EA
Unit of Use - Customary Cubic Dimension 7.583603749884665 ci
Unit of Use - Customary Gross Weight 0.0855393577277325 lbs
Unit of Use - Customary Net Weight 0.07299505500941297 lbs
Unit of Use - Metric Cubic Dimension 124.273 CCM
Unit of Use - Metric Net Weight 33.11 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 DISC
Unit of Use - Unit EA
Consumer - Billing Unit EA
Consumer - Customary Cubic Dimension 152.25881829716414 ci
Consumer - Customary Gross Weight 2.037953151637008 lbs
Consumer - Customary Net Weight 1.824876375235324 lbs
Consumer - Customary Height Dimension 2.1653543307086616 in
Consumer - Customary Length Dimension 8.464566929133857 in
Consumer - Customary Width Dimension 8.307086614173228 in
Consumer - Metric Cubic Dimension 2495.075 CCM
Consumer - Metric Net Weight 827.75 G
Consumer - Metric Height Dimension 0.055 M
Consumer - Metric Length Dimension 0.215 M
Consumer - Metric Width Dimension 0.211 M
Consumer - Item Quantity 25
Consumer - Total Unit Quantity 25
Consumer - Previous Packaging Level Quantity 25
Consumer - Previous Packaging Level Unit DISC
Consumer - Item Unit DISC
Consumer - Unit KAR
Shipper - Billing Unit EA
Shipper - Customary Cubic Dimension 758.3596427035374 ci
Shipper - Customary Gross Weight 8.55393577277325 lbs
Shipper - Customary Net Weight 7.299505500941296 lbs
Shipper - Customary Height Dimension 9.291338582677165 in
Shipper - Customary Length Dimension 9.173228346456693 in
Shipper - Customary Width Dimension 8.89763779527559 in
Shipper - Metric Cubic Dimension 12427.288 CCM
Shipper - Metric Weight 3.88 KG
Shipper - Metric Net Weight 3.311 KG
Shipper - Metric Height Dimension 0.236 M
Shipper - Metric Length Dimension 0.233 M
Shipper - Metric Width Dimension 0.226 M
Shipper - Item Quantity 100
Shipper - Total Unit Quantity 100
Shipper - Previous Packaging Level Quantity 4
Shipper - Previous Packaging Level Unit CTNS
Shipper - Item Unit DISC
Shipper - Unit CS
Pallet - Billing Unit EA
Pallet - Customary Cubic Dimension 83724.5768979727 ci
Pallet - Customary Gross Weight 718.7069747227009 lbs
Pallet - Customary Net Weight 583.9604400753037 lbs
Pallet - Customary Height Dimension 42.125984251968504 in
Pallet - Customary Length Dimension 47.63779527559055 in
Pallet - Customary Width Dimension 41.732283464566926 in
Pallet - Metric Cubic Dimension 1.372 M3
Pallet - Metric Net Weight 264.88 KG
Pallet - Metric Height Dimension 1.07 M
Pallet - Metric Length Dimension 1.21 M
Pallet - Metric Width Dimension 1.06 M
Pallet - Item Quantity 8000
Pallet - Total Unit Quantity 8000
Pallet - Previous Packaging Level Quantity 80
Pallet - Previous Packaging Level Unit BOX
Pallet - Item Unit DISC
Pallet - Unit PAL
Pallet - Pallet Layer Quantity 4
Pallet - Shipping Container Per Layer Quantity 20
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