3M 7000044971 Microfinishing Film Disc 366L 1-3/8 Inch

Product Description

The 3M 7000044971 is a Hookita Microfinishing Film Disc in the 366L series, designed for precision finishing and surface preparation across a wide range of materials. It features micron-graded aluminum oxide abrasive bonded to a durable polyester film backing. This combination delivers a fast cut rate and a consistent, repeatable finish. The disc measures 1-3/8 inches in diameter with a scalloped edge profile. It is suited for finishing wood, solid surface composites, plastic, fiberglass, metal, primer, e-coat, paint prep, and corrosion removal applications. Licensed tradespeople and finishing professionals use this disc in multi-step surface refinishing workflows.

This disc is designed for use in detail sanding and microfinishing applications where close tolerances and uniform scratch patterns are required. The 1-3/8 inch diameter makes it well suited for small-surface or contoured workpiece finishing. It is commonly used in automotive refinishing, woodworking, and industrial surface prep environments. The Hookita hook and loop attachment system allows rapid disc changes between grits during multi-step finishing sequences, reducing downtime between passes.

Key Features

• Micron-graded aluminum oxide abrasive provides fast cut rate and long service life across multiple substrate types
• Durable polyester film backing supports close-tolerance finishing and a consistent scratch pattern
• Hookita hook and loop system enables quick attachment and removal for efficient multi-step finishing
• Load-resistant coating helps prevent dust and debris from clogging the abrasive surface
• Scalloped disc edge promotes flexibility and conformability on contoured surfaces
• Compatible with both open coat and dust control configurations

Compatibility

Designed for use with Hookita-compatible hook and loop backup pads and tools that accept 1-3/8 inch diameter discs. Suitable for use on wood, solid surface composites, plastic, fiberglass, paint, primer, e-coat, and metal substrates.

Installation Notes

Installation and disc changes should be performed with the tool powered off and disconnected from its power source. Verify that the backup pad is clean and in good condition before attaching the disc to ensure full hook and loop engagement. Inspect the disc prior to each use and discard if torn, loaded, or delaminating. Follow applicable workplace safety guidelines and manufacturer tool specifications when operating abrasive finishing equipment.

Technical Specifications

• Abrasive Type: Aluminum Oxide
• Backing Material: Polyester Film
• Attachment Type: Hookita Hook and Loop
• Disc Diameter: 1-3/8 inches
• Edge Profile: Scalloped
• Package Weight: 8.022 pounds
• UOM: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000044971