3M 7100139932 Unitized Abrasive Block Fine Grade Cut Polish

Product Description

The 3M 7100139932 is a unitized abrasive block designed for aggressive blending and finishing on metal and similar surfaces. Built in a layered, unitized construction, it delivers consistent cut and surface conditioning throughout the life of the block. The abrasive mineral is fine grade aluminum oxide, suited for controlled material removal and smooth finishing passes. At a soft density rating of 5A, the block conforms slightly to contours without sacrificing cutting action. It is sized at 5 inches x 1 inch x 1/2 inch and sold individually. This tool is primarily used by metalworkers, fabricators, and finishing technicians working on weld blending, surface prep, and deburring applications.

This abrasive block is applicable in industrial and trade finishing environments where hand-held or block-mounted surface conditioning is required. It is well suited for weld blending, light stock removal, and pre-finish surface preparation on ferrous and non-ferrous metals. The cut-to-size format allows it to be used as-is or trimmed to fit specific holders or hand-wrapping applications. Technicians in HVAC fabrication, plumbing rough-in metalwork, and general mechanical trades commonly use unitized abrasive blocks for cleanup and finishing tasks during installation or repair work.

Key Features

• Layered unitized construction provides consistent abrasive action from first use to last
• Fine grade aluminum oxide mineral delivers controlled cut for blending and finishing
• Soft 5A density allows moderate conformability to irregular or contoured surfaces
• Cut-to-size block format supports hand use or adaptation to holders and fixtures
• Dimensions of 5 inches x 1 inch x 1/2 inch suit detail finishing and weld blending work

Compatibility

Designed as an OEM-style unitized abrasive block suitable for hand-held surface conditioning, blending, and finishing applications across general metalworking and trade service tasks.

Installation Notes

No power tools or fasteners are required for standard hand use of this abrasive block. When used in mechanical holders or mounted fixtures, ensure the block is seated securely before applying pressure. Wear appropriate eye protection and gloves when performing blending or finishing operations. Follow applicable shop safety protocols and local codes when working in confined or enclosed areas.

Technical Specifications

• Abrasive Mineral: Aluminum Oxide
• Grade: Fine
• Density: 5A (Soft)
• Construction: Layered Unitized
• Dimensions: 5 inches x 1 inch x 1/2 inch
• Weight: 0.07 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100139932