3M 7100215947 Stikita 321U Disc Roll 5 in 240 Grit

Product Description

The 3M 7100215947 is the Stikita 321U abrasive disc roll designed for automotive paint preparation and body repair work. Each disc combines a ceramic aluminum oxide mineral blend on a paper backing, delivering consistent cut and finish across multiple sanding stages. The disc measures 5 inches in diameter and is graded at 240 grit, placing it in the fine-finishing range for smoothing primer, sealer, and topcoat work. An anti-loading coating keeps the cutting surface clear of dust and debris, extending usable disc life between changes. Stikita adhesive backing allows fast disc swaps without liners or tools.

This disc roll is used in automotive refinishing shops and body repair facilities for the intermediate and final sanding stages of paint prep. The 240 grit level suits applications such as scuff sanding clear coats, smoothing guide coat, and finish-sanding primer before topcoat application. Discs tear off one at a time from the roll, reducing waste and eliminating the need for individual packaging or liner disposal. The ceramic and aluminum oxide mineral blend supports use on steel, aluminum, and body filler substrates common in collision repair workflows.

Key Features

• 240 grit ceramic aluminum oxide mineral blend for consistent cut and finish in paint prep
• Anti-loading coating resists dust buildup and extends disc life
• Stikita adhesive backing enables fast, tool-free disc attachment and removal
• Paper backing provides flexibility for contour sanding and flat panel work
• Liner-free roll format allows single-disc tear-off, reducing material waste
• Upgraded resin bond improves disc durability through extended use

Compatibility

Designed for use with 5 inch Stikita-compatible random orbital and orbital sanding tools used in automotive refinishing and body repair applications.

Installation Notes

Installation of abrasive disc rolls is performed by automotive refinishing technicians and body repair professionals. Ensure the backing pad on the sander is clean and free of debris before attaching a new disc to maintain even contact across the abrasive surface. Inspect the disc for tears or uneven wear before each use and replace as needed. Follow shop ventilation and respiratory protection requirements when dry sanding automotive finishes.

Technical Specifications

• Disc Diameter: 5 inches
• Grit: 240
• Mineral Type: Ceramic Aluminum Oxide
• Backing Material: Paper
• Attachment Type: Stikita Adhesive
• Unit of Measure: Roll
• Minimum Order Quantity: 5
• Weight: 5.25 pounds
• Package Length: 9.96 inches
• Package Width: 6.76 inches
• Package Height: 6.95 inches
• UPC: 051131362708

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100215947