3M 7100145365 Psa Abrasive Disc 320 Grit 5 Inches

Product Description

The 3M 7100145365 is a Cubitron II Stikit 775L PSA (pressure-sensitive adhesive) coated abrasive disc designed for precision sanding applications in automotive, metalworking, and surface finishing trades. It uses ceramic precision-shaped grain on a 3 mil film backing, delivering consistent cut rates and extended disc life compared to conventional abrasive materials. The disc runs at an ultra fine 320 grit, making it appropriate for finish sanding, paint prep, and final surface smoothing. Maximum operating speed is 12,000 RPM. The open coat construction and linered face reduce loading and make the disc easier to handle during high-volume production work.

This disc is well suited for automotive body shops, aerospace surface prep, and general metal fabrication environments where consistent finish quality at ultra fine grits is required. The 5-inch diameter fits standard PSA-style backup pads common in production sanding setups. The linered release backing allows easy peel-and-stick application to compatible backup pads. Sold in quantities of 50 discs per inner pack and 250 discs per case, making it practical for shop stocking in high-use environments.

Key Features

• Ceramic precision-shaped grain abrasive for consistent cut and long disc life
• 320 grit ultra fine grade for finish sanding and paint prep work
• 3 mil film backing provides flexibility and conformability on contoured surfaces
• Open coat construction resists loading during extended sanding runs
• Linered PSA attachment for clean, fast pad changes
• Rated to 12,000 RPM maximum operating speed

Compatibility

Designed for use with 5-inch PSA-style backup pads on random orbital and disc sanders commonly used in automotive body, metalworking, and composite surface finishing applications.

Installation Notes

Installation is performed by surface finishing professionals and automotive technicians. Before mounting, ensure the backup pad surface is clean and free of debris to allow full PSA contact. Do not exceed the 12,000 RPM maximum speed rating. Inspect the disc for damage before each use and discard any disc showing tears, delamination, or compromised adhesive.

Technical Specifications

• Trade Name: Cubitron II
• Series: 775L
• Product Form: Disc
• Abrasive Type: Coated
• Abrasive Material: Ceramic Precision-Shaped Grain
• Grit: 320
• Grade: Ultra Fine
• Disc Diameter: 5 inches
• Backing Material: Film
• Backing Weight: 3 mil
• Coat Type: Open Coat
• Color: Purple
• Maximum RPM: 12,000
• Additional Features: Linered
• Package Quantity: 50 discs per inner, 250 discs per case

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100145365