{"product_id":"solid-brass-cap-nuts-m3-to-m20-decorative-dome","title":"M3-M20 Solid Brass Cap Nuts – Brass Cover Screw Nuts \u0026 Decorative Dome Caps, Hex Acorn Nuts (Untreated Natural Finish)","description":"\u003cstyle\u003e\n  .hdiy-product-section { margin: 1.5rem 0; }\n  .hdiy-product-section h2 { font-size: 1.8rem; margin-bottom: 1rem; border-bottom: 2px solid #e2e2e2; padding-bottom: 0.5rem; }\n  .hdiy-product-section h3 { font-size: 1.4rem; margin: 1rem 0 0.75rem; }\n  .hdiy-feature-list { list-style: none; padding-left: 0; }\n  .hdiy-feature-list li { margin-bottom: 0.75rem; padding-left: 1.5rem; position: relative; }\n  .hdiy-feature-list li::before { content: \"✓\"; position: absolute; left: 0; color: #2c6e2c; font-weight: bold; }\n  .hdiy-table-wrapper { overflow-x: auto; margin: 1rem 0; }\n  .hdiy-table-wrapper table { width: 100%; border-collapse: collapse; min-width: 400px; }\n  .hdiy-table-wrapper th, .hdiy-table-wrapper td { border: 1px solid #ccc; padding: 0.6rem; text-align: left; vertical-align: top; }\n  .hdiy-table-wrapper th { background-color: #f5f5f5; font-weight: 600; }\n  .hdiy-faq-item { margin-bottom: 1.2rem; }\n  .hdiy-faq-item strong { display: block; font-weight: 600; margin-bottom: 0.3rem; }\n  .hdiy-note { background-color: #f9f9e0; padding: 0.75rem; border-left: 4px solid #e6a017; margin: 1rem 0; }\n  @media (max-width: 640px) {\n    .hdiy-product-section h2 { font-size: 1.5rem; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"hdiy-product-section\"\u003e\n\u003ch2\u003e🏆 Exposed Nut Looking Ugly? Top It With A Solid Brass Dome Cap\u003c\/h2\u003e\n\u003cp\u003eYou’ve got a bolt sticking out of a furniture piece, a DIY lamp, or maybe a motorcycle bracket – and the raw nut just looks unfinished. These \u003cstrong\u003esolid brass cap nuts\u003c\/strong\u003e screw right over standard metric nuts or bolt ends, hiding everything under a smooth, rounded dome. No more exposed threads snagging clothes or scratching skin. The brass gives a warm, classic look that ages beautifully, unlike cheap zinc or plastic caps. Perfect for furniture restoration, electrical enclosures, decorative hardware, or any project where you want a clean, professional finish. Available from tiny M3 up to M20.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-product-section\"\u003e\n\u003ch2\u003e⚙️ Why Use Solid Brass Cover Nuts Instead Of Plastic Or Steel\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSolid brass construction\u003c\/strong\u003e – H59-3 brass alloy offers excellent corrosion resistance, high strength, and natural anti‑galling properties. Won't rust like steel, won't crack like plastic.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDecorative domed cap design\u003c\/strong\u003e – The hexagonal base for wrench grip blends into a smooth round top. Hides the bolt end completely for a polished, furniture‑grade look.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUntreated natural finish\u003c\/strong\u003e – Raw brass develops a rich patina over time, or you can polish it to keep the golden shine. No coating to peel or flake.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision threaded interior\u003c\/strong\u003e – Clean, burr‑free threads ensure even force distribution and a tight, secure fit. Won't cross‑thread or loosen under vibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWide metric range M3 to M20\u003c\/strong\u003e – Use on small electronics hardware up to heavy furniture bolts. Standard metric pitch fits most machine screws and bolts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSmooth domed exterior\u003c\/strong\u003e – No sharp edges means safer to touch, easier to clean, and won't snag fabric or skin.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-product-section\"\u003e\n\u003ch2\u003e📏 Specifications – Solid Brass Acorn Nuts \u0026amp; Dome Caps\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrapper\"\u003e\n\u003cbr\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 22.7793%; height: 19.5938px;\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"width: 70.3592%; height: 19.5938px;\"\u003eGoobetter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 22.7793%; height: 19.5938px;\"\u003eProduct Name\u003c\/th\u003e\n\u003ctd style=\"width: 70.3592%; height: 19.5938px;\"\u003eHexagonal Domed Cap Nut (Acorn Nut \/ Cover Nut)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 22.7793%; height: 19.5938px;\"\u003eMaterial\u003c\/th\u003e\n\u003ctd style=\"width: 70.3592%; height: 19.5938px;\"\u003eH59-3 Solid Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 22.7793%; height: 19.5938px;\"\u003eSurface Finish\u003c\/th\u003e\n\u003ctd style=\"width: 70.3592%; height: 19.5938px;\"\u003eUntreated (natural brass – may darken with age, can be polished)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 22.7793%; height: 39.1875px;\"\u003eAvailable Sizes (Metric Thread)\u003c\/th\u003e\n\u003ctd style=\"width: 70.3592%; height: 39.1875px;\"\u003eM3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 22.7793%; height: 39.1875px;\"\u003eSystem of Measurement\u003c\/th\u003e\n\u003ctd style=\"width: 70.3592%; height: 39.1875px;\"\u003eMetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 22.7793%; height: 19.5938px;\"\u003eDrive Type\u003c\/th\u003e\n\u003ctd style=\"width: 70.3592%; height: 19.5938px;\"\u003eHexagonal base (use wrench or pliers for installation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 22.7793%; height: 19.5938px;\"\u003eHead Style\u003c\/th\u003e\n\u003ctd style=\"width: 70.3592%; height: 19.5938px;\"\u003eDomed round cap with hex lower section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 22.7793%; height: 39.1875px;\"\u003eKey Properties\u003c\/th\u003e\n\u003ctd style=\"width: 70.3592%; height: 39.1875px;\"\u003eCorrosion resistance, high strength \u0026amp; toughness, excellent cutting performance, non‑toxic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 22.7793%; height: 39.1875px;\"\u003eTypical Applications\u003c\/th\u003e\n\u003ctd style=\"width: 70.3592%; height: 39.1875px;\"\u003eFurniture hardware, electrical terminals, decorative automotive\/motorcycle bolts, pin ends, pipe fittings, bearing retainers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-product-section\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cstrong\u003e🔩 What thread pitch do these brass cap nuts use?\u003c\/strong\u003e\n\u003cp\u003eThey use standard metric coarse thread pitch for each size. For example, M6 is 1.0mm pitch, M8 is 1.25mm, M10 is 1.5mm. They fit standard metric bolts and machine screws. If you have a fine pitch thread (like M8x1.0), these won't work – contact us for special orders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cstrong\u003e✨ Will the brass stay shiny or turn dark over time?\u003c\/strong\u003e\n\u003cp\u003eUntreated brass naturally oxidizes and develops a darker, antique patina. Many people love that look for vintage furniture or industrial decor. If you want to keep it bright, apply a clear lacquer or polish occasionally with a brass cleaner. The choice is yours – it's not coated, so it behaves like real brass should.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cstrong\u003e🔧 Can I use these as regular nuts to secure a bolt, or just as covers?\u003c\/strong\u003e\n\u003cp\u003eBoth. The interior threads are fully functional – you can screw them directly onto a bolt to act as a standard nut. The domed top just adds a finished look and covers the bolt end. For best results, use a flat washer underneath if the material is soft. They're strong enough for most light to medium duty applications like furniture assembly or electrical panels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cstrong\u003e⚡ Are these brass cap nuts safe for electrical use?\u003c\/strong\u003e\n\u003cp\u003eYes – brass is conductive, so they can be used as terminal nuts on grounding studs or electrical lugs. The domed shape also provides some insulation protection against accidental contact (though they are not insulated like plastic caps). For high‑voltage applications, add a rubber boot over the cap for safety.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cstrong\u003e📦 Do you sell mixed size packs or only individual sizes?\u003c\/strong\u003e\n\u003cp\u003eWe sell each size separately so you can order exactly what your project needs. If you need a variety pack, please contact our customer service – we can create a custom assortment for you (minimum quantity may apply).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e💡 \u003cstrong\u003ePro tip:\u003c\/strong\u003e For a truly flush look on exposed bolt ends, measure the bolt's protrusion length before ordering. The interior depth of the cap nut is roughly equal to the diameter (e.g., an M6 cap has about 6mm of internal depth). Make sure your bolt doesn't bottom out inside the dome – shorten the bolt if needed.\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"M3 \/ 1","offer_id":52253437985042,"sku":"GLFBMWXBRTQJD000386x1","price":6.12,"currency_code":"USD","in_stock":true},{"title":"M3 \/ 5","offer_id":52253438017810,"sku":"GLFBMWXBRTQJD000386x5","price":6.87,"currency_code":"USD","in_stock":true},{"title":"M3 \/ 10","offer_id":52253438050578,"sku":"GLFBMWXBRTQJD000386x10","price":7.79,"currency_code":"USD","in_stock":true},{"title":"M3 \/ 50","offer_id":52253438083346,"sku":"GLFBMWXBRTQJD000386x50","price":15.2,"currency_code":"USD","in_stock":true},{"title":"M3 \/ 100","offer_id":52253438116114,"sku":"GLFBMWXBRTQJD000386x100","price":24.97,"currency_code":"USD","in_stock":true},{"title":"M3 \/ 200","offer_id":52253438148882,"sku":"GLFBMWXBRTQJD000386x200","price":47.8,"currency_code":"USD","in_stock":true},{"title":"M3 \/ 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