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3M 426U 5 inch 150 grit disc is a resin bonded general purpose finishing disc that uses silicon carbide on A-weight paper to deliver controlled, uniform sanding on finishing passes. The PSA backing creates a pressure-sensitive adhesive bond to your backup pad, so discs stay put during use and can be peeled off quickly between grits on the same tool. The no hole design presents full-face abrasive contact to the work surface, which supports consistent scratch patterns on each pass. The disc is part of the 3M 415U/426U general purpose finishing line, giving shops a consistent abrasive system for light finishing stages. The 150 grit cut positions this disc for intermediate and finish sanding where you want visible scratch refinement without jumping straight to very fine grits.
The disc is built as a PSA no hole design, so it relies on a pressure-sensitive adhesive layer to attach directly to a compatible backup pad. That adhesive layer allows quick press-on mounting, keeping disc changes within the same diameter fast when stepping through grits. With no holes in the face, the abrasive surface remains uninterrupted, which supports a continuous scratch pattern when you are chasing a uniform finish across a panel or edge. The 5 inch diameter sizing matches the stated 27778 Stikit roll description, giving you a consistent disc footprint for standard finishing passes and edge blending work on that pad size.
This disc is identified as part of the 3M 415U/426U resin bonded general purpose finishing disc line, so it is intended for finishing stages in an abrasive workflow rather than heavy stock removal. The 150 grit rating places it in the intermediate-to-fine range, which is useful between coarser leveling grits and finer final finishing steps. The 5 inch diameter referenced in the product name ties the disc to 5 inch PSA backup pads, aligning with common finishing sander footprints in many shops. The no hole format focuses the design on workflows where full-face abrasive contact and simple PSA attachment are preferred over vacuum hole patterns.
The use of silicon carbide grain on this disc directly affects how the abrasive cuts, because that grain type is selected in the description as the cutting material for the finishing disc. The A-weight paper backing described in the product data influences flexibility and feel, allowing the disc to follow slight surface variations during finishing passes. The stated resin bonded construction secures the silicon carbide grain to the backing, helping the disc hold together under repeated use during general purpose finishing passes. The load resistant coating mentioned in the description acts on debris buildup at the abrasive surface, supporting more consistent cutting action from the 150 grit grain over time. The PSA backing referenced in the product data under the Stikit roll description enables press-on installation and peel-off removal, which shortens abrasive changeover time between grits in a finishing sequence on the same tool.
The disc is described as a general purpose finishing disc, so it is positioned for finishing and surface refinement steps rather than aggressive stock removal.
The disc uses silicon carbide abrasive, which provides the cutting action on the surface and supports the finishing performance described for this general purpose disc.
The disc uses an A-weight paper backing, giving a lighter, more flexible base that influences how the disc conforms to the work during finishing passes.
The disc is resin bonded, so the bonding system secures the silicon carbide grain to the paper while you sand, supporting usable disc life across passes.
The disc has a load resistant coating, which is designed to reduce loading at the abrasive surface and support more consistent cutting action from the 150 grit grain.
The disc uses a PSA backing in a no hole format, so it adheres directly to a compatible pad and peels off, streamlining disc changeover steps on the tool.
The 3M 426U 5 inch 150 grit disc combines silicon carbide abrasive, A-weight paper, resin bonded construction, a load resistant coating, and PSA no hole attachment to support general purpose finishing work. When that combination aligns with your 5 inch PSA pad setup and finishing stages, this disc provides a defined 150 grit option within the 3M 415U/426U finishing family for consistent surface refinement.
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