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    Abrasive Discs
    1. Home
    2. Abrasives
    3. Abrasive Discs
    Item # FJ578350 • Mfr # 578350

    Festool Granat Hook & Loop Sanding Disc 5" 150 Grit Hardened Aluminum Oxide Paper Backed 9 Hole 50 Discs-Box 578350

    Description

    Festool Granat 150 Grit Disc For Versatile Sanding

    Festool Granat 5 inch 150 grit sanding disc is a paper backed abrasive disc that uses hardened aluminum oxide to cut consistently across a wide range of surfaces. The 150 grit rating levels and smooths while still leaving a fine scratch pattern that is ready for subsequent sanding or finishing steps. The hook and loop backing lets the disc attach firmly to compatible hook and loop sanding pads, so discs stay seated under load yet can be changed quickly between grits or operations. A 9-hole pattern in the disc aligns with matching multi-jet sanding pads, allowing dust to be pulled through the holes, which supports cleaner sanding and clearer visibility of the work surface. Festool Granat is described as Festool's most long-lasting and highest performing abrasive, which helps reduce disc changes during larger jobs and supports more consistent results across multiple workpieces.

    Key Granat Disc Details That Help On The Job

    • The Festool Granat abrasive disc is well suited for nearly all applications, covering bare wood through various finishes, so one disc type can handle prep, intermediate, and between-coat sanding on many shop projects without changing abrasive families.
    • Suitability for paints and most modern paint systems means the disc can sand cured coatings without loading as quickly, which supports smoother leveling of painted cabinet doors, trim, or panels while maintaining a controlled surface profile.
    • Performance on VOC clear coats allows sanding modern low-VOC finishes used in many shops, so one abrasive line can be used from raw substrate through clear topcoats, reducing confusion in abrasive selection.
    • Capability on plastic materials, solid surface materials, and acrylics lets this same 150 grit disc work during fabrication or edge finishing of non-wood parts, helping keep abrasives consistent between cabinet components and solid surface elements.
    • Suitability for composites means the disc can be applied to composite panels or molded parts, allowing one abrasive specification to follow through on mixed-material installations where wood, plastic, and composite pieces are processed together.
    • The closed coated construction places abrasive grains densely across the paper backing, providing an even cutting surface that supports fast material removal at 150 grit while leaving a uniform scratch pattern for predictable follow-up steps.

    Hook And Loop Granat Disc Mounting And Setup

    The Granat 5 inch 150 grit disc uses a hook and loop backing, which mounts directly to compatible hook and loop sanding pads without tools. This backing style lets installers pull one disc off and press another on in seconds, helping transitions between grits or between materials without slowing the workflow. The 5 inch diameter matches common random-orbit sanders that use 5 inch hook and loop pads, so the abrasive covers the pad face appropriately and maintains edge control during sanding. The 9-hole design is intended for sanding pads that use a 9-hole dust extraction layout, channeling dust from the sanding surface into the pad and through vacuum extraction when available. This hole pattern supports cleaner discs and surfaces, which can extend usable cutting time for each disc and help keep scratch patterns visible while leveling coatings or substrates.

    Using The Granat 150 Grit Disc Across Materials

    Where This Festool 5 Inch Disc Works Best

    This Festool Granat abrasive disc is well suited for nearly all applications, which covers bare wood, paints, most modern paint systems, VOC clear coats, plastic materials, solid surface materials, acrylics, and composites. On bare wood, the 150 grit hardness allows flattening milling marks and small defects while setting the surface for finer sanding steps before finishing. On paints and most modern paint systems, the hardened aluminum oxide abrasive cuts through minor orange peel and brush marks so coating surfaces level out without aggressive gouging. VOC clear coats can be sanded between coats with this same disc line, keeping the system consistent from sealer to final topcoat sanding. On plastic materials and acrylics, the paper backed disc helps refine edges and faces so routed or cut surfaces transition smoothly before polishing or additional finishing work. For solid surface materials and composites, this disc allows controlled stock refinement, which is helpful when bringing seams, edges, or routed profiles into a uniform plane while maintaining predictable scratch depth.

    Why Hardened Aluminum Oxide And Coating Design Matter

    Granat uses hardened aluminum oxide as the abrasive, which provides a tough cutting surface that maintains its shape as it wears, contributing to longer disc life during extended sanding on wood, coatings, or composites. The synthetic resin bond holds the abrasive grains on the paper backing, supporting consistent grain retention and helping the disc stay effective across more passes before changing to a fresh disc. Closed coated construction covers most of the backing with abrasive grain, which increases the number of cutting points contacting the surface at 150 grit and supports efficient material removal for its fineness. Festool describes Granat as its most long-lasting and highest performing abrasive, so the combination of hardened aluminum oxide, synthetic resin, and closed coat design is intended for demanding shop environments where many surfaces and coatings are processed daily. This construction supports more uniform scratch patterns from disc to disc, which can reduce rework caused by unexpected deep scratches or early disc breakdown during critical finishing steps.

    Common Granat 150 Grit Disc Questions For Installers

    What type of sanding disc is the Festool Granat 578350?

    The Festool Granat 578350 is a 5 inch, 150 grit, hook and loop, 9-hole sanding disc using hardened aluminum oxide on a paper backing, suited to a wide range of surface sanding tasks.

    How does the hook and loop backing help in daily sanding work?

    The hook and loop backing lets the Granat disc attach and release quickly from compatible pads, supporting fast grit changes and minimizing downtime during multi-step sanding sequences.

    Why choose a 150 grit Festool Granat abrasive disc?

    The 150 grit Festool Granat disc provides a balance between material removal and surface refinement, preparing bare wood or coatings for finer sanding or finishing steps in a controlled way.

    What does the 9-hole pattern on this disc do?

    The 9-hole pattern aligns with matching sanding pads to pull dust through the disc, helping keep the surface cleaner and maintaining cutting efficiency while sanding.

    On which materials can this Granat disc be used?

    The Granat disc is well suited for bare wood, paints, most modern paint systems, VOC clear coats, plastic materials, solid surface materials, acrylics, and composites, supporting mixed-material shop work.

    How does hardened aluminum oxide affect sanding performance?

    Hardened aluminum oxide on the Granat disc delivers a tough cutting surface that maintains its shape, supporting longer use and consistent scratch patterns across demanding sanding tasks.

    Choose This Festool Granat Disc For Multi-Surface Work

    This Festool Granat 5 inch 150 grit hook and loop 9-hole sanding disc uses hardened aluminum oxide, synthetic resin, and closed coated construction to handle bare wood, coatings, plastics, solid surface materials, acrylics, and composites. The 150 grit rating and paper backing let it bridge from shaping to finish prep, so one disc type can follow many cabinet, millwork, or fabrication jobs from substrate leveling through coating refinement. Selecting this Granat disc ties everyday sanding tasks to a consistent abrasive system that supports predictable results on a wide range of shop materials.

    Diameter (in)
    5 in
    Diameter (mm)
    125 mm
    Attachment Type
    Hook and loop
    Grit
    150
    Hole Pattern
    9-hole
    Mineral
    Hardened aluminum oxide
    Product Type
    Sanding Discs
    Vacuum Type
    Vacuum
    Backing Weight
    Paper Backed
    Manufacturer Series
    Granat
    Supplier Pack Size
    1
    Sold In
    1
    Diameter (in)
    5 in
    Diameter (mm)
    125 mm
    Attachment Type
    Hook and loop
    Grit
    150
    Hole Pattern
    9-hole
    Mineral
    Hardened aluminum oxide
    Product Type
    Sanding Discs
    Vacuum Type
    Vacuum
    Backing Weight
    Paper Backed
    Manufacturer Series
    Granat
    Supplier Pack Size
    1
    Sold In
    1
    12015022018080040320400240500601,000801001,2001,500
    Festool
    $40.00/Box
    Festool Granat Hook & Loop Sanding Disc 5" 150 Grit Hardened Aluminum Oxide Paper Backed 9 Hole 50 Discs-Box 578350
    Item# FJ578350 / MFR Part # 578350
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