Norton 66254487444 Psa Disc 5 in 320 Grit Silicon Carbide 100pk

Product Description

The NORTON 66254487444 is a pressure-sensitive adhesive (PSA) abrasive disc designed for fine surface finishing and stock removal on a wide range of substrates. The disc measures 5 inches in diameter and features a 320-grit silicon carbide abrasive rated as extra fine grade. Silicon carbide cuts fast on hard surfaces and leaves a consistent scratch pattern, making it a reliable choice for finish sanding, deburring, and surface prep. The B-weight paper backing provides a balance of flexibility and stability, conforming to slightly contoured surfaces without tearing. Each package contains 100 discs. This disc is part of the Norton A413 series and is installed and used by trade professionals in fabrication, finishing, and maintenance applications.

This PSA disc is suited for use on metal, wood, composites, and painted surfaces where a fine finish is required before coating or final inspection. The pressure-sensitive adhesive backing attaches directly to PSA-compatible backup pads without the need for hook-and-loop hardware. Common applications include weld seam blending, paint prep, and inter-coat sanding in automotive, metalworking, and general fabrication environments. The flexible paper backing allows the disc to seat evenly on flat and mildly contoured work surfaces. With no vacuum holes, this disc is intended for use on solid backup pads in non-dust-extraction setups or where hole patterns are not required.

Key Features

• 320-grit silicon carbide abrasive delivers a consistent extra fine finish on hard surfaces
• 5-inch diameter fits standard PSA backup pads used in fabrication and finishing work
• B-weight paper backing offers flexibility for flat and mildly contoured surfaces
• Pressure-sensitive adhesive mount — no hook-and-loop hardware required
• No vacuum holes — compatible with solid backup pads
• 100 discs per package for high-volume or production use

Compatibility

Designed for use with PSA-compatible 5-inch backup pads. No specific model or system compatibility was provided in the product data; verify backup pad diameter and adhesive type before use.

Installation Notes

Mounting and removal is handled by hand — no tools required. Ensure the backup pad surface is clean and free of adhesive residue before applying a new disc, as contamination reduces bond strength. Operate the disc within the speed rating of the backup pad and sander being used. Discard discs that show signs of loading, tearing, or delamination to maintain consistent finish quality.