3M Hookit Blue Abrasive Disc 321U, 36240, 6 in x NH, 40, 50 discs per carton, 4 cartons per case

• A best-in-class abrasive for a variety of applications
• Anti-loading coating prevents dust and debris from clogging the cutting surface
• Discs available in mutli-hole pattern for excellent dust extraction or in no-hole format
• Engineered ceramic mineral blend is balanced for maximum abrasive performance in its class
• Upgraded resins improve durability and finish

The 3M Hookit Blue Abrasive Disc 321U delivers best-in-class performance at every stage of paint prep and coatings removal. Premium aluminum oxide mineral abrasive is blended with ceramic grain for a full range of sanding applications. The multi-hole discs feature a specially-designed pattern that reduces loading, extends disc life and aligns with most backup pads. Hookit attachment makes disc changes easy. Best-in-Class Performance in Every Grade Part of our full line of 3M Blue Abrasives, the 3M Hookit Blue Abrasive Disc is engineered for best-in-class cut, life and efficiency across your entire shop. The disc features a tough ceramic blended with premium aluminum oxide mineral for just the right balance. 3M Blue Abrasives deliver consistently excellent results in a minimum amount of time, on jobs ranging from aggressive paint removal and fresh filler sanding to blend preparation and sanding primer. Discs are available in a wide range of sizes and grades. Dust Extraction and Anti-Loading Features Enhance Performance and Life The multi-hole pattern discs are specially designed to capture dust and keep it away from the abrasive surface. This specially-designed hole pattern reduces loading and extracts dust more efficiently compared to standard 6- or 7-hole disc configurations. It includes alignment guides across the disc, making it fast and easy to align with nearly any backup pad. The mineral blend on the 3M Hookit Blue Abrasive Disc is bonded using upgraded resins for enhanced durability. An anti-loading coating helps keep dust from gathering between the abrasive grains for a faster cut and for consistent performance throughout the life of the disc. Our Hookit Attachment System The Hookit attachment system has a hook-and-loop feature which makes disc attachment, removal, and re-attachment clean and easy. It also facilitates use and re-use of the disc for maximum product life. Hookit discs have a brushed nylon loop backing of the type most commonly used in everyday hook-and-loop applications. 3M Hookit disc pads (sold separately) feature hooks which grip the brushed nylon loop backing. It’s simple: just attach the disc and start sanding. The disc removes just as cleanly and easily. The Hookit system is designed for work spaces and applications where adhesive backed discs may become contaminated by dust, dirt, or debris. Better Science for Better Sanding from 3M Our 3M Blue Abrasives family is designed as a cost-effective, high-performance upgrade for any sanding application in coatings removal and paint preparation. From its balanced, engineered mineral blend to its multi-hole pattern option for dust extraction, our 3M Hookit Blue Abrasive Disc is another way that 3M applies science to deliver best-in-class performance for professionals.

3M Hookit Blue Model

The 3M Hookit Blue Abrasive Disc 321U is designed for professionals seeking reliable sanding performance. This model combines a balanced ceramic mineral blend with premium aluminum oxide for effective paint prep and coatings removal.

Its Hookit attachment system ensures quick disc changes and easy re-attachment, making it ideal for busy shops. The 321U model supports efficient sanding with consistent results across various applications.

Grade 40 Abrasive Strength

Featuring a Grade 40 abrasive, these discs deliver aggressive cutting power for tough sanding jobs. This grade is perfect for removing paint and preparing surfaces quickly without sacrificing control.

With 50 discs per carton and 4 cartons per case, this pack size supports extended use and reduces downtime. The Grade 40 discs maintain durability thanks to upgraded resins that improve finish and lifespan.

Six Inch Size Versatility

The discs measure 6 inches in diameter, a common size that fits most standard sanding tools. This size offers a good balance between surface coverage and maneuverability for detailed work.

Whether sanding filler or primer, the 6 in x NH format ensures compatibility with various backup pads. This dimension supports both aggressive and fine sanding tasks in automotive and industrial settings.

Multi-Hole Dust Extraction

These discs come in a multi-hole pattern designed to enhance dust extraction during sanding. This feature helps keep the abrasive surface clear, reducing loading and extending disc life.

The hole pattern aligns with most backup pads, making it easy to install and maintain. Efficient dust removal improves sanding speed and keeps the workspace cleaner for better results.

Pack Count Convenience

Each carton contains 50 discs, and the full case includes 4 cartons, totaling 200 discs. This pack size is ideal for shops needing a steady supply of abrasives without frequent reordering.

The large pack count supports continuous work on multiple projects, ensuring that you always have the right disc on hand. It also offers cost savings for high-volume sanding operations.