{"product_id":"mirka-coarse-cut-5-in-p40-psa-sanding-disc-for-coarse-sanding-40-332-040","title":"Mirka Coarse Cut 5-in. P40 PSA Sanding Disc for Coarse Sanding (40-332-040)","description":"\u003csection data-aplus\u003e\n  \u003cdetails id=\"product-features\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"features\"\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/grit-range.svg\" alt=\"grit-range\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eAggressive 40 Grit Cut\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eBuilt for heavy material removal when finer sanding discs would just waste time. The P40 abrasive is a good fit for stripping lacquer, cutting through filler, and leveling rough surfaces fast.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/material.svg\" alt=\"material\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eDurable Aluminum Oxide\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eThe aluminum oxide abrasive and reinforced backing are made for coarse sanding where edge wear usually kills a disc early. That means more usable life and fewer deep, uneven scratch patterns from broken edges.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/sander.svg\" alt=\"sander\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003e5 Inch PSA Disc\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eThis Mirka sanding disc uses a pressure-sensitive adhesive backing for a secure hold on compatible sanders and sanding pads. If you want a disc that stays planted during aggressive sanding, this style matters.\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-overview\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eOverview\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\" data-product-summary\u003e\n      \u003cp\u003eThe Mirka 40-332-040 Coarse Cut PSA Disc, 5 Inch is a heavy-cut sanding disc for aggressive stock removal on demanding surface prep jobs. This is a sanding disc designed for coarse sanding, stripping, and leveling work on materials like lacquer, putty, glass-reinforced polyester, and weld seams. Model Number: 40-332-040. If you need to remove material quickly instead of creeping up on it with a fine grit disc, this is the kind of abrasive that makes sense.\u003c\/p\u003e\n      \u003cp\u003eWhat matters here is the cut rate. With a 40 grit abrasive, this disc is meant for the early stage of sanding where the goal is fast removal, not finish-ready results. That makes it a practical choice for body filler shaping, weld cleanup, and rough prep before moving to finer grits. Mirka calls this Coarse Cut for a reason: it is built to be aggressive and productive on jobs where slower abrasives just burn time.\u003c\/p\u003e\n      \u003cp\u003eThe abrasive material is aluminum oxide, which is a proven choice for general-purpose sanding and coarse surface prep. Mirka also backs this disc with reinforced construction and its Progressive Bond technology, which is meant to improve durability under hard use. In plain terms, that matters because coarse discs often fail at the edge first. When the edge breaks down too early, you get inconsistent cutting and deeper scratch patterns that create more cleanup later.\u003c\/p\u003e\n      \u003cp\u003eAnother practical advantage is reduced clogging. On fillers, coatings, and similar materials, loading can kill sanding speed fast. A disc that resists clogging stays useful longer and keeps the cut more consistent through the job. Mirka also notes flexibility on rounded surfaces, which makes this disc more useful beyond flat panel work when you're blending curves or contouring repairs.\u003c\/p\u003e\n      \u003cp\u003eThe 5 inch format fits a common class of sanding setups, and the PSA backing is important if your sander or pad is designed around adhesive-backed discs rather than hook and loop. That secure attachment helps during hard sanding passes where you do not want the disc shifting. Just make sure your tool or backup pad is set up for PSA discs before ordering.\u003c\/p\u003e\n      \u003cp\u003eThis sanding disc makes the most sense for auto body work, metalworking, composite repair, and general surface prep where heavy removal comes first. Serious DIY users can absolutely use it, but it is best suited to buyers who understand grit progression and need a true coarse-cut abrasive rather than an all-around finishing disc. If your job starts ugly and needs to get flat in a hurry, this Mirka disc is aimed right at that stage.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-benefits\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eRemove Material Fast at the Start\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"row\"\u003e\n        \u003cdiv class=\"img\"\u003e\n          \u003cimg src=\"https:\/\/cdn.anglera.com\/assets\/74d6ed76-fe0d-4d23-a9db-1f8749ca9ef2\/20260624470_1.jpg\" alt=\"Mirka 40-332-040 Coarse Cut PSA Disc, 5 Inch abrasive surface for aggressive sanding and material removal during body filler and weld prep work\" class=\"tnblock-img\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"copy\"\u003e\n          \u003cp\u003eWhen the surface is rough, coated, or built up with filler, starting with the right abrasive saves real time. This 40 grit sanding disc is made for the early passes where the goal is quick removal and shaping, not finish sanding.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003eP40 coarse grit for aggressive sanding and stripping\u003c\/li\u003e\n            \u003cli\u003eGood fit for lacquer, putty, glass-reinforced polyester, and weld seams\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-benefits-2\" class=\"acc flip\"\u003e\n    \u003csummary\u003e\u003ch2\u003eBuilt to Hold Up Under Coarse Sanding\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"row\"\u003e\n        \u003cdiv class=\"img\"\u003e\n          \u003cimg src=\"https:\/\/cdn.anglera.com\/assets\/74d6ed76-fe0d-4d23-a9db-1f8749ca9ef2\/20260624470_2.jpg\" alt=\"Mirka 40-332-040 Coarse Cut PSA Disc, 5 Inch PSA backing marked P40 for use on compatible sanding pads in repair and prep work\" class=\"tnblock-img\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"copy\"\u003e\n          \u003cp\u003eCoarse sanding is hard on discs, especially around edges and on metal transitions. Mirka built this one for that kind of work with reinforced backing and a bond system aimed at better edge life and more consistent cutting.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003ePSA backing for use with compatible adhesive-style sanding pads\u003c\/li\u003e\n            \u003cli\u003eDesigned to minimize edge wear and reduce clogging during heavy prep\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-key-specifications\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003ctable class=\"aplusspecs\"\u003e\n        \u003ctr\u003e\n          \u003cth\u003eDisc Diameter\u003c\/th\u003e\n          \u003ctd\u003e5 in\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eGrit\u003c\/th\u003e\n          \u003ctd\u003eP40 \/ 40 Grit\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eAbrasive Material\u003c\/th\u003e\n          \u003ctd\u003eAluminum Oxide\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBacking Type\u003c\/th\u003e\n          \u003ctd\u003ePSA (Pressure-Sensitive Adhesive)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eConstruction Type\u003c\/th\u003e\n          \u003ctd\u003eCoated\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eRecommended Use\u003c\/th\u003e\n          \u003ctd\u003eCoarse sanding \/ cutting\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eForm\u003c\/th\u003e\n          \u003ctd\u003eSanding Disc\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eMade In\u003c\/th\u003e\n          \u003ctd\u003eFinland\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-compatibility\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"compat-list\"\u003e\n        \u003cdiv class=\"compat-row\"\u003e\n          \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/size.svg\" alt=\"size\" class=\"icon-sm\"\u003e\n          \u003cdiv\u003e\n            \u003cstrong\u003ePad Size\u003c\/strong\u003e\n            \u003cdiv class=\"compat-detail\"\u003eFits compatible 5 inch sanding pads and sanders.\u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"compat-row\"\u003e\n          \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/material.svg\" alt=\"material\" class=\"icon-sm\"\u003e\n          \u003cdiv\u003e\n            \u003cstrong\u003eAttachment Style\u003c\/strong\u003e\n            \u003cdiv class=\"compat-detail\"\u003eUses PSA backing, so it is intended for adhesive-backed sanding systems rather than hook and loop pads.\u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-applications-uses\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eBuilt For\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tags\"\u003e\n        \u003cspan class=\"tag\"\u003eAutomotive\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eBody Filler Shaping\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eMetalworking\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eComposite Repair\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eSurface Prep\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eWeld Seam Cleanup\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eCoating Removal\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eDIY \/ Hobbyist\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-pro-tips\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003ePro Tip\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tip-row\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/specs.svg\" alt=\"specs\" class=\"icon-lg\"\u003e\n        \u003cp class=\"tip-text\"\u003eUse this P40 disc only for your first shaping and cleanup passes, then step down through finer grits before primer or finish work. That is the easiest way to take advantage of the fast cut without leaving yourself extra scratch removal later.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-tool-nut-take\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eTool Nut's Take\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"eyebrow\"\u003eTool Nut's Take\u003c\/div\u003e\n      \u003ch3\u003eMirka 40-332-040 Coarse Cut PSA Disc, 5 Inch Gets Right to Work\u003c\/h3\u003e\n      \u003cp\u003eThis is the kind of sanding disc you buy when you need removal speed first and finish quality later.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWho it's for:\u003c\/strong\u003e Auto body techs, metal fabricators, composite repair users, and serious DIYers doing rough prep and shaping work.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhy it stands out:\u003c\/strong\u003e The coarse P40 cut, aluminum oxide abrasive, reinforced build, and PSA backing make it a practical choice for hard sanding where cheap discs fall apart early.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWorth knowing:\u003c\/strong\u003e This is not a finishing abrasive, and it is only the right choice if your pad accepts PSA discs.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-faqs\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eCommon Questions\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhat kind of sanding is this disc made for?\u003c\/strong\u003e It is made for coarse sanding and aggressive material removal, including lacquer, putty, glass-reinforced polyester, and weld seams.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhat grit is it?\u003c\/strong\u003e This disc is P40, which is a very coarse grit used for early-stage shaping and stripping work.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eIs this a hook and loop sanding disc?\u003c\/strong\u003e No. The product data identifies it as a PSA disc, which means it uses pressure-sensitive adhesive backing.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhat size sander does it fit?\u003c\/strong\u003e It is a 5 inch disc, so it fits compatible 5 inch sanding pads and sanders designed for PSA discs.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e","brand":"Mirka","offers":[{"title":"Default Title","offer_id":53385944334630,"sku":"40-332-040-MIRKA","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/20260624470_1.jpg?v=1782171979","url":"https:\/\/www.toolnut.com\/products\/mirka-coarse-cut-5-in-p40-psa-sanding-disc-for-coarse-sanding-40-332-040","provider":"Tool Nut","version":"1.0","type":"link"}