{"product_id":"round-aluminum-disc-plate-105mm-x-6mm","title":"Round Aluminum Sheet Disc Plate Diameter 105mm Thick 6mm 5pcs","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eRound Aluminum Disc Plate 105mm x 6mm — Precise, Machinable, Ready to Use\u003c\/h2\u003e\n\u003cp\u003eWhen your project demands a flat, accurately sized metal blank that machines cleanly and resists corrosion without extra treatment, finding the right round aluminum disc can be frustrating. Hobbyists, makers, and small-shop engineers often waste time cutting irregular stock or dealing with warped blanks. This round aluminum sheet disc is sized and ready to go straight to your lathe, drill press, or grinder.\u003c\/p\u003e\n\u003cp\u003eEach disc is cut from 1000-series or 6000-series aluminum alloy sheet stock (exact alloy see variant options), measuring 105 mm (approx. 4.13 in) in diameter and 6 mm (approx. 0.24 in) in thickness. The flat, smooth faces require minimal facing before use. This listing includes 5 pieces per order.\u003c\/p\u003e\n\u003cp\u003eTypical applications include DIY speaker spacer rings, custom end caps for tubing, heat-sink blanks for electronics projects, and decorative medallions for woodworking inlays — all scenarios where a round aluminum disc plate with consistent thickness is essential for a clean result.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e Compatible with standard metalworking tools including lathes, drill presses, angle grinders, and CNC routers. Suitable for anodizing, painting, and powder-coating finishing processes.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Round Aluminum Disc Plates\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e \u003cstrong\u003eConsistent 105 mm × 6 mm dimensions\u003c\/strong\u003e — diameter and thickness held to close tolerances so each blank fits your design without rework.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eMachinable aluminum alloy\u003c\/strong\u003e — cuts, drills, and taps cleanly with standard HSS or carbide tooling; chips break away without gumming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eNatural corrosion resistance\u003c\/strong\u003e — aluminum oxide layer forms automatically, protecting the disc in humid workshops and outdoor installations without additional coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e \u003cstrong\u003eLightweight yet rigid\u003c\/strong\u003e — the 6 mm thickness provides structural stiffness for load-bearing blanks while keeping overall weight low compared to steel equivalents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e \u003cstrong\u003eFinish-ready surface\u003c\/strong\u003e — smooth, flat faces accept anodizing, painting, and powder-coating directly, reducing prep time before finishing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003e5-piece pack\u003c\/strong\u003e — multiple blanks per order let you prototype, test, and produce without waiting for a reorder; extras serve as spares for future repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Round Aluminum Disc Plate\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eShape\u003c\/th\u003e\n\u003ctd\u003eRound disc (circular blank)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e105 mm (approx. 4.13 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e6 mm (approx. 0.24 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eMill finish, smooth flat faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003ctd\u003eNatural aluminum oxide layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMachinability\u003c\/th\u003e\n\u003ctd\u003eSuitable for turning, drilling, milling, and tapping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Processes\u003c\/th\u003e\n\u003ctd\u003eAnodizing, painting, powder-coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Pack\u003c\/th\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight (per piece)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the exact diameter and thickness tolerance on these discs?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe discs are cut to 105 mm diameter and 6 mm thickness. Typical cutting tolerances for aluminum disc blanks of this type are ±0.5 mm on diameter and ±0.2 mm on thickness. If your application requires tighter tolerances, plan to face or turn the blank to final dimension on a lathe.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhich aluminum alloy is used — 1000-series or 6000-series?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003ePlease refer to the variant options or contact us to confirm the exact alloy grade. Both 1000-series (commercially pure, excellent corrosion resistance, softer) and 6000-series (alloyed, stronger, still very machinable) are common for disc blanks of this size. We will confirm the specific grade on request.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I drill or tap threads into a 6 mm thick aluminum disc?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. At 6 mm thickness you can drill through-holes and tap threads for M3, M4, or M5 fasteners with standard HSS taps. Use cutting fluid and a slow feed rate to get clean threads. For M6 or larger, through-hole tapping is possible but leaves limited thread engagement — consider a blind hole or a thicker disc if high pull-out strength is needed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWill these discs rust or corrode in outdoor or humid conditions?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAluminum naturally forms a thin, stable oxide layer that resists rust and general atmospheric corrosion. These discs are suitable for humid workshop environments and light outdoor use. For prolonged outdoor exposure or contact with salt water, applying an anodized or powder-coated finish will significantly extend service life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre these discs suitable for use as speaker spacer rings or audio project blanks?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The 105 mm diameter is close to a standard 4-inch driver cutout size, making these discs a practical starting point for speaker spacer rings, baffle adapters, or custom mounting plates. You will need to drill the center hole and any mounting holes to your specific driver dimensions.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I choose between this 6 mm disc and a thinner option for my project?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eChoose 6 mm when you need structural rigidity — for example, a load-bearing bracket, a thick end cap, or a blank that will be turned down on a lathe to a precise finished thickness. If you only need a lightweight cover plate, decorative medallion, or shim, a thinner disc (0.5–2 mm) will be lighter and easier to cut with hand tools. Match the thickness to the mechanical demands of your application.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I anodize or paint these discs at home?\u003c\/summary\u003e\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The mill-finish surface accepts both DIY anodizing (using a sulfuric acid bath and DC power supply) and rattle-can or brush-applied aluminum primer plus topcoat. Clean the surface thoroughly with acetone or isopropyl alcohol before any finishing process to remove oils and ensure adhesion.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your size and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the exact diameter and thickness tolerance on these discs?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The discs are cut to 105 mm diameter and 6 mm thickness. Typical cutting tolerances for aluminum disc blanks of this type are ±0.5 mm on diameter and ±0.2 mm on thickness. If your application requires tighter tolerances, plan to face or turn the blank to final dimension on a lathe.\"}},{\"@type\":\"Question\",\"name\":\"Which aluminum alloy is used — 1000-series or 6000-series?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Please refer to the variant options or contact us to confirm the exact alloy grade. Both 1000-series and 6000-series are common for disc blanks of this size.\"}},{\"@type\":\"Question\",\"name\":\"Can I drill or tap threads into a 6 mm thick aluminum disc?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. At 6 mm thickness you can drill through-holes and tap threads for M3, M4, or M5 fasteners with standard HSS taps. Use cutting fluid and a slow feed rate to get clean threads.\"}},{\"@type\":\"Question\",\"name\":\"Will these discs rust or corrode in outdoor or humid conditions?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Aluminum naturally forms a thin, stable oxide layer that resists rust and general atmospheric corrosion. For prolonged outdoor exposure or contact with salt water, applying an anodized or powder-coated finish will significantly extend service life.\"}},{\"@type\":\"Question\",\"name\":\"Are these discs suitable for use as speaker spacer rings or audio project blanks?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The 105 mm diameter is close to a standard 4-inch driver cutout size, making these discs a practical starting point for speaker spacer rings, baffle adapters, or custom mounting plates.\"}},{\"@type\":\"Question\",\"name\":\"How do I choose between this 6 mm disc and a thinner option for my project?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Choose 6 mm when you need structural rigidity — for a load-bearing bracket, a thick end cap, or a blank that will be turned down on a lathe. If you only need a lightweight cover plate or shim, a thinner disc will be lighter and easier to cut with hand tools.\"}},{\"@type\":\"Question\",\"name\":\"Can I anodize or paint these discs at home?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The mill-finish surface accepts both DIY anodizing and rattle-can or brush-applied aluminum primer plus topcoat. Clean the surface thoroughly with acetone or isopropyl alcohol before any finishing process.\"}}]}\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"105mm x 6mm \/ 1","offer_id":52378451869970,"sku":"GYZLLLVYUANBANWWZZ1x1","price":42.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of10_4ce61d29-23bd-4f20-8e36-d60cd73140cc.jpg?v=1781778382","url":"https:\/\/homediyer.com\/products\/round-aluminum-disc-plate-105mm-x-6mm","provider":"HomeDIYer","version":"1.0","type":"link"}