{"title":"Cup Washers","description":"","products":[{"product_id":"m4-m12-anodized-aluminum-countersunk-washers-cup-washers","title":"M4–M12 Anodized Aluminum Countersunk Washers – Cup Washers, 10 Colors","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eM4–M12 Anodized Aluminum Countersunk Washers — 10 Vibrant Colors for a Clean, Flush Finish\u003c\/h2\u003e\n    \u003cp\u003eStandard flat washers leave a raised, unfinished look around countersunk screws — a real problem when you want a flush, professional finish on aluminum bicycle frames, RC builds, or custom electronics enclosures. These anodized aluminum countersunk (cup) washers are designed to sit flush against the surface, creating a clean, finished appearance around countersunk fasteners.\u003c\/p\u003e\n    \u003cp\u003eMachined from high-strength, heat-treatable aluminum alloy and finished with a durable anodized coating, each washer features a countersunk profile that mates cleanly with flat-head and countersunk screws. Available in M4, M5, M6, M8, M10, and M12 thread sizes and 10 anodized colors — Dark Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, and Orange — manufactured to a ±0.3mm tolerance.\u003c\/p\u003e\n    \u003cp\u003eThese countersunk washers are ideal for high-end aluminum bicycle frame assembly, drone and RC model builds, aerospace model accessories, computer case modding, golf equipment, mold tooling fixtures, and any precision project where a flush, color-matched fastener finish is required.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e✅\u003c\/span\u003e\n    Compatible with M4, M5, M6, M8, M10, and M12 countersunk (flat-head) screws and bolts. Countersunk profile seats flush against the workpiece surface. Tolerance: ±0.3mm.\n  \u003c\/div\u003e\n\n  \u003cdiv\u003e\n    \u003ch2\u003e✅ Key Features of These Aluminum Countersunk Washers\u003c\/h2\u003e\n    \u003cul class=\"hdiy-features\"\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eHigh-Strength Aluminum Alloy Construction:\u003c\/strong\u003e Heat-treatable alloy delivers excellent mechanical performance, good wear resistance, and outstanding corrosion and oxidation resistance for long-lasting durability in workshops, garages, and precision builds.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003e10 Anodized Color Options:\u003c\/strong\u003e Available in Dark Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, and Orange — perfect for color-matched builds and custom aesthetics across any project.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eCountersunk (Cup) Profile for Flush Finish:\u003c\/strong\u003e The countersunk profile mates cleanly with flat-head and countersunk screws, allowing the fastener assembly to sit flush against the surface for a clean, professional appearance.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003e6 Thread Sizes (M4–M12):\u003c\/strong\u003e Covers M4, M5, M6, M8, M10, and M12 thread diameters for versatile use across bicycle frames, RC models, electronics enclosures, and mechanical assemblies of varying load requirements.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eDurable Anodized Surface Treatment:\u003c\/strong\u003e The anodized finish integrates into the aluminum surface for a hard, color-fast layer that resists scratching, fading, and oxidation under normal use conditions.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003ePrecision Machined to ±0.3mm Tolerance:\u003c\/strong\u003e Consistent dimensions across all size variants ensure reliable fit and proper seating with standard M4–M12 countersunk screws and bolts.\u003c\/span\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-usecases\"\u003e\n    \u003ch2\u003e🎯 Who Is This For?\u003c\/h2\u003e\n    \u003cdiv class=\"hdiy-usecase-item\"\u003e\n      \u003cspan\u003e🚴\u003c\/span\u003e\n      \u003cstrong\u003eBicycle \u0026amp; Cycling Builders\u003c\/strong\u003e\n      \u003cp\u003eIdeal for high-end aluminum alloy bicycle frame assembly where a flush, color-matched fastener finish and lightweight hardware are equally important.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-usecase-item\"\u003e\n      \u003cspan\u003e✈️\u003c\/span\u003e\n      \u003cstrong\u003eRC, Drone \u0026amp; Aerospace Model Enthusiasts\u003c\/strong\u003e\n      \u003cp\u003eThe lightweight aluminum construction and flush-fit profile make these washers a natural fit for RC aircraft, drone frames, and aerospace model toy accessories.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-usecase-item\"\u003e\n      \u003cspan\u003e🖥️\u003c\/span\u003e\n      \u003cstrong\u003ePC Modders \u0026amp; Electronics Builders\u003c\/strong\u003e\n      \u003cp\u003eAdd a pop of color and a clean flush finish to custom computer cases, cooling systems, and electronics enclosures with anodized countersunk washers that complement your build’s color scheme.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-usecase-item\"\u003e\n      \u003cspan\u003e🔨\u003c\/span\u003e\n      \u003cstrong\u003eDIY Makers \u0026amp; Precision Fabricators\u003c\/strong\u003e\n      \u003cp\u003eSuitable for golf equipment, mold processing, mechanical equipment assembly, and any project requiring corrosion-resistant, lightweight washers with a clean countersunk finish.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminum Alloy (High Strength, Heat Treatable)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eCountersunk Washer (Cup Washer)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAvailable Thread Sizes\u003c\/th\u003e\n\u003ctd\u003eM4, M5, M6, M8, M10, M12\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSurface Treatment\u003c\/th\u003e\n\u003ctd\u003eAnodized\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAvailable Colors\u003c\/th\u003e\n\u003ctd\u003eDark Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, Orange\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTolerance\u003c\/th\u003e\n\u003ctd\u003e±0.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eKey Properties\u003c\/th\u003e\n\u003ctd\u003eHigh strength, good mechanical performance, easy to process, wear resistant, corrosion resistant, oxidation resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat material are these countersunk washers made from?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese washers are machined from high-strength, heat-treatable aluminum alloy and finished with an anodized coating. The anodized surface provides a hard, color-fast layer that resists corrosion, scratching, and oxidation.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat thread sizes and colors are available?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThread sizes available are M4, M5, M6, M8, M10, and M12. Colors available are Dark Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, and Orange. Select your preferred Color and Size (Thread Diameter) combination from the variant options above.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat type of screws are these washers designed to work with?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese are countersunk (cup) washers designed to work with flat-head and countersunk screws. The countersunk profile allows the washer to seat flush against the workpiece surface, creating a clean, finished appearance around the fastener head.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these washers suitable for outdoor or high-moisture environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe anodized aluminum construction offers good corrosion and oxidation resistance, making these washers suitable for light outdoor use. For environments with constant salt spray or harsh chemicals, stainless steel hardware is generally recommended instead.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWill the anodized color fade or chip over time?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe anodized finish is integrated into the surface of the aluminum rather than applied as a paint or coating, which means it is generally more resistant to fading and chipping than painted alternatives under normal use conditions.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the manufacturing tolerance on these washers?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese washers are manufactured to a tolerance of ±0.3mm, ensuring consistent dimensions and reliable seating with standard M4–M12 countersunk screws and bolts.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eCan these aluminum washers be used with steel screws?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes, these aluminum countersunk washers are compatible with standard metric steel screws in M4–M12 sizes. Keep in mind that aluminum is softer than steel, so they are best suited for applications where load levels are within the alloy’s mechanical limits. Avoid over-torquing to prevent deformation.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Color and Size (Thread Diameter) above, then add to cart.\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"Dark Red \/ M4","offer_id":51330423423250,"sku":"LRPGDDTGK05697x1","price":1.99,"currency_code":"USD","in_stock":true},{"title":"Rose Red \/ M4","offer_id":51330423456018,"sku":"LRPGDDTGK05698x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Golden \/ M4","offer_id":51330423488786,"sku":"LRPGDDTGK05699x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Royal Blue \/ M4","offer_id":51330423521554,"sku":"LRPGDDTGK05700x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Sky Blue \/ M4","offer_id":51330423554322,"sku":"LRPGDDTGK05701x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Black \/ M4","offer_id":51330423587090,"sku":"LRPGDDTGK05702x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Silver \/ M4","offer_id":51330423619858,"sku":"LRPGDDTGK05703x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Green \/ M4","offer_id":51330423652626,"sku":"LRPGDDTGK05704x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Purple \/ M4","offer_id":51330423685394,"sku":"LRPGDDTGK05705x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Orange \/ M4","offer_id":51330423718162,"sku":"LRPGDDTGK05706x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Dark Red \/ M5","offer_id":51330423750930,"sku":"LRPGDDTGK05708x1","price":2.61,"currency_code":"USD","in_stock":true},{"title":"Rose Red \/ M5","offer_id":51330423783698,"sku":"LRPGDDTGK05709x1","price":2.61,"currency_code":"USD","in_stock":true},{"title":"Golden \/ M5","offer_id":51330423816466,"sku":"LRPGDDTGK05710x1","price":2.61,"currency_code":"USD","in_stock":true},{"title":"Royal Blue \/ M5","offer_id":51330423849234,"sku":"LRPGDDTGK05711x1","price":2.61,"currency_code":"USD","in_stock":true},{"title":"Sky Blue \/ M5","offer_id":51330423882002,"sku":"LRPGDDTGK05712x1","price":2.61,"currency_code":"USD","in_stock":true},{"title":"Black \/ M5","offer_id":51330423914770,"sku":"LRPGDDTGK05713x1","price":2.61,"currency_code":"USD","in_stock":true},{"title":"Silver \/ M5","offer_id":51330423947538,"sku":"LRPGDDTGK05714x1","price":2.61,"currency_code":"USD","in_stock":true},{"title":"Green \/ M5","offer_id":51330423980306,"sku":"LRPGDDTGK05715x1","price":2.61,"currency_code":"USD","in_stock":true},{"title":"Purple \/ M5","offer_id":51330424013074,"sku":"LRPGDDTGK05716x1","price":2.61,"currency_code":"USD","in_stock":true},{"title":"Orange \/ M5","offer_id":51330424045842,"sku":"LRPGDDTGK05717x1","price":2.61,"currency_code":"USD","in_stock":true},{"title":"Dark Red \/ M6","offer_id":51330424078610,"sku":"LRPGDDTGK05729x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Rose Red \/ M6","offer_id":51330424111378,"sku":"LRPGDDTGK05730x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Golden \/ M6","offer_id":51330424144146,"sku":"LRPGDDTGK05731x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Royal Blue \/ M6","offer_id":51330424176914,"sku":"LRPGDDTGK05732x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Sky Blue \/ M6","offer_id":51330424209682,"sku":"LRPGDDTGK05733x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Black \/ M6","offer_id":51330424242450,"sku":"LRPGDDTGK05734x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Silver \/ M6","offer_id":51330424275218,"sku":"LRPGDDTGK05735x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Green \/ M6","offer_id":51330424307986,"sku":"LRPGDDTGK05736x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Purple \/ M6","offer_id":51330424340754,"sku":"LRPGDDTGK05737x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Orange \/ M6","offer_id":51330424373522,"sku":"LRPGDDTGK05738x1","price":2.72,"currency_code":"USD","in_stock":true},{"title":"Dark Red \/ M8","offer_id":51330424406290,"sku":"LRPGDDTGK05760x1","price":3.08,"currency_code":"USD","in_stock":true},{"title":"Rose Red \/ M8","offer_id":51330424439058,"sku":"LRPGDDTGK05761x1","price":3.08,"currency_code":"USD","in_stock":true},{"title":"Golden \/ M8","offer_id":51330424471826,"sku":"LRPGDDTGK05762x1","price":3.08,"currency_code":"USD","in_stock":true},{"title":"Royal Blue \/ M8","offer_id":51330424504594,"sku":"LRPGDDTGK05763x1","price":3.08,"currency_code":"USD","in_stock":true},{"title":"Sky Blue \/ M8","offer_id":51330424537362,"sku":"LRPGDDTGK05764x1","price":3.08,"currency_code":"USD","in_stock":true},{"title":"Black \/ M8","offer_id":51330424570130,"sku":"LRPGDDTGK05765x1","price":3.08,"currency_code":"USD","in_stock":true},{"title":"Silver \/ M8","offer_id":51330424602898,"sku":"LRPGDDTGK05766x1","price":3.08,"currency_code":"USD","in_stock":true},{"title":"Green \/ M8","offer_id":51330424635666,"sku":"LRPGDDTGK05767x1","price":3.08,"currency_code":"USD","in_stock":true},{"title":"Purple \/ M8","offer_id":51330424668434,"sku":"LRPGDDTGK05768x1","price":3.08,"currency_code":"USD","in_stock":true},{"title":"Orange \/ M8","offer_id":51330424701202,"sku":"LRPGDDTGK05769x1","price":3.08,"currency_code":"USD","in_stock":true},{"title":"Dark Red \/ M10","offer_id":51330424733970,"sku":"LRPGDDTGK05771x1","price":3.88,"currency_code":"USD","in_stock":true},{"title":"Rose Red \/ M10","offer_id":51330424766738,"sku":"LRPGDDTGK05772x1","price":3.88,"currency_code":"USD","in_stock":true},{"title":"Golden \/ M10","offer_id":51330424799506,"sku":"LRPGDDTGK05773x1","price":3.88,"currency_code":"USD","in_stock":true},{"title":"Royal Blue \/ M10","offer_id":51330424832274,"sku":"LRPGDDTGK05774x1","price":3.88,"currency_code":"USD","in_stock":true},{"title":"Sky Blue \/ M10","offer_id":51330424865042,"sku":"LRPGDDTGK05775x1","price":3.88,"currency_code":"USD","in_stock":true},{"title":"Black \/ M10","offer_id":51330424897810,"sku":"LRPGDDTGK05776x1","price":3.88,"currency_code":"USD","in_stock":true},{"title":"Silver \/ M10","offer_id":51330424930578,"sku":"LRPGDDTGK05777x1","price":3.88,"currency_code":"USD","in_stock":true},{"title":"Green \/ 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M12","offer_id":51330425192722,"sku":"LRPGDDTGK05785x1","price":4.24,"currency_code":"USD","in_stock":true},{"title":"Black \/ M12","offer_id":51330425225490,"sku":"LRPGDDTGK05786x1","price":4.24,"currency_code":"USD","in_stock":true},{"title":"Silver \/ M12","offer_id":51330425258258,"sku":"LRPGDDTGK05787x1","price":4.24,"currency_code":"USD","in_stock":true},{"title":"Green \/ M12","offer_id":51330425291026,"sku":"LRPGDDTGK05788x1","price":4.24,"currency_code":"USD","in_stock":true},{"title":"Purple \/ M12","offer_id":51330425323794,"sku":"LRPGDDTGK05789x1","price":4.24,"currency_code":"USD","in_stock":true},{"title":"Orange \/ M12","offer_id":51330425356562,"sku":"LRPGDDTGK05790x1","price":4.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/3_1e239a66-b9fa-4b5b-937e-5b4e0ac3da79.jpg?v=1764654587"}],"url":"https:\/\/homediyer.com\/collections\/cup-washers.oembed","provider":"HomeDIYer","version":"1.0","type":"link"}