{"id":3513,"date":"2025-07-01T16:03:10","date_gmt":"2025-07-01T08:03:10","guid":{"rendered":"https:\/\/machinedwasher.com\/?post_type=product&p=3513"},"modified":"2025-07-01T16:14:03","modified_gmt":"2025-07-01T08:14:03","slug":"aluminum-unthreaded-spacers","status":"publish","type":"product","link":"https:\/\/machinedwasher.com\/el\/products\/aluminum-unthreaded-spacers\/","title":{"rendered":"Black Colorful Anodized Round Aluminum Unthreaded Spacers M2 M3 M4 M5 M6 M8"},"content":{"rendered":"

What is an Aluminum Unthreaded Spacer?<\/strong><\/h2>\n

An\u00a0Aluminum Unthreaded Spacer<\/strong>\u00a0(also called a\u00a0standoff<\/strong>\u00a0or\u00a0bushing<\/strong>) is a cylindrical tube made of aluminum, designed to create precise gaps, provide insulation, or maintain alignment between components in mechanical assemblies. Unlike threaded spacers, these\u00a0have smooth inner and outer diameters with no threading, making them ideal for applications requiring free movement of bolts or shafts.<\/p>\n

\n

Specifications of Aluminum Unthreaded Spacers<\/strong><\/h2>\n

Material<\/strong><\/h3>\n
    \n
  • \n

    Aluminum Alloys<\/strong>\u00a0(Common grades):<\/p>\n

      \n
    • \n

      6061-T6<\/strong>\u00a0\u2013 High strength, good machinability, corrosion-resistant.<\/p>\n<\/li>\n

    • \n

      7075-T6<\/strong>\u00a0\u2013 Aerospace-grade, extremely strong but less corrosion-resistant.<\/p>\n<\/li>\n

    • \n

      2024-T3<\/strong>\u00a0\u2013 High strength-to-weight ratio, used in aircraft.<\/p>\n<\/li>\n

    • \n

      Pure Aluminum (1xxx series)<\/strong>\u00a0\u2013 Excellent corrosion resistance but lower strength.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

      Surface Treatment<\/strong><\/h3>\n
        \n
      • \n

        Anodizing (Type II or Type III Hardcoat)<\/strong>\u00a0\u2013 Improves corrosion\/wear resistance.<\/p>\n<\/li>\n

      • \n

        Chromate Conversion Coating (Alodine\/Iridite)<\/strong>\u00a0\u2013 Enhances corrosion protection.<\/p>\n<\/li>\n

      • \n

        Powder Coating<\/strong>\u00a0\u2013 Adds color and extra durability.<\/p>\n<\/li>\n

      • \n

        Natural (Bare Aluminum)<\/strong>\u00a0\u2013 Used when minimal oxidation is acceptable.<\/p>\n<\/li>\n<\/ul>\n

        Standard Specifications<\/strong><\/h3>\n
          \n
        • \n

          Inner Diameter (ID):<\/strong>\u00a02mm to 50mm (custom sizes available)<\/p>\n<\/li>\n

        • \n

          Outer Diameter (OD):<\/strong>\u00a04mm to 60mm<\/p>\n<\/li>\n

        • \n

          Length:<\/strong>\u00a05mm to 200mm (or custom)<\/p>\n<\/li>\n

        • \n

          Tolerance:<\/strong>\u00a0Typically \u00b10.1mm (precision machining available)<\/p>\n<\/li>\n<\/ul>\n

          \n

          Applications of Aluminum Unthreaded Spacers<\/strong><\/h2>\n
            \n
          • \n

            Electronics & PCB Mounting<\/strong>\u00a0\u2013 Maintains spacing between circuit boards and chassis.<\/p>\n<\/li>\n

          • \n

            Automotive & Aerospace<\/strong>\u00a0\u2013 Lightweight structural support in engines and airframes.<\/p>\n<\/li>\n

          • \n

            Robotics & Machinery<\/strong>\u00a0\u2013 Ensures proper alignment of moving parts.<\/p>\n<\/li>\n

          • \n

            Renewable Energy<\/strong>\u00a0\u2013 Solar panel framing and wind turbine assemblies.<\/p>\n<\/li>\n

          • \n

            Medical Devices<\/strong>\u00a0\u2013 Used in imaging equipment and surgical tools for precision spacing.<\/p>\n<\/li>\n<\/ul>\n

            \n

            Excellent Case: Drone Frame Assembly<\/strong><\/h2>\n

            Challenge<\/strong><\/h3>\n

            A drone manufacturer needed lightweight, high-strength spacers to separate carbon fiber plates while minimizing weight and preventing electrical conductivity (to avoid interference with onboard electronics). Steel spacers were too heavy, and plastic lacked sufficient strength.<\/p>\n

            Solution<\/strong><\/h3>\n
              \n
            • \n

              Hardcoat-Anodized 6061-T6 Aluminum Spacers<\/strong>\u00a0were selected because they:<\/p>\n

                \n
              • \n

                Reduce weight vs. steel (~60% lighter).<\/p>\n<\/li>\n

              • \n

                Provide structural rigidity for high-vibration environments.<\/p>\n<\/li>\n

              • \n

                Anodizing prevents electrical conductivity between components.<\/p>\n<\/li>\n

              • \n

                Resist corrosion from moisture and outdoor exposure.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                Result<\/strong><\/h3>\n
                  \n
                • \n

                  Weight savings<\/strong>\u00a0\u2192 Longer flight time and improved battery efficiency.<\/p>\n<\/li>\n

                • \n

                  Enhanced durability<\/strong>\u00a0\u2013 No deformation under stress.<\/p>\n<\/li>\n

                • \n

                  No signal interference<\/strong>\u00a0\u2013 Anodized layer acts as an insulator.<\/p>\n<\/li>\n

                • \n

                  Lower production cost<\/strong>\u00a0\u2013 Easier to machine than titanium or stainless steel.<\/p>\n<\/li>\n<\/ul>\n

                  This case demonstrates how aluminum unthreaded spacers optimize performance in high-tech applications like drones, balancing strength, weight, and functionality.<\/p>\n

                  Would you like details on custom spacer designs or industry-specific standards?<\/p>","protected":false},"excerpt":{"rendered":"

                  Black Colorful Anodized Round Aluminum Unthreaded Spacers M2 M3 M4 M5 M6 M8<\/p>","protected":false},"featured_media":3519,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[31],"product_tag":[1425,1428,515,1421,1429,1430,1422,1426,1427,487,488,1424,1423],"class_list":{"0":"post-3513","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-metal-spacers","7":"product_tag-2-inch-metal-spacers","8":"product_tag-5-16-metal-spacers","9":"product_tag-aluminum-spacers","10":"product_tag-aluminum-unthreaded-spacers","11":"product_tag-cnc-machined-spacers","12":"product_tag-cnc-machining-spacers","13":"product_tag-flat-metal-spacers","14":"product_tag-large-metal-spacers","15":"product_tag-m8-metal-spacers","16":"product_tag-metal-spacers","17":"product_tag-metal-spacers-for-bolts","18":"product_tag-metal-spacers-for-screws","19":"product_tag-round-metal-spacers","21":"first","22":"instock","23":"shipping-taxable","24":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/machinedwasher.com\/el\/wp-json\/wp\/v2\/product\/3513","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/machinedwasher.com\/el\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/machinedwasher.com\/el\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/machinedwasher.com\/el\/wp-json\/wp\/v2\/comments?post=3513"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/machinedwasher.com\/el\/wp-json\/wp\/v2\/media\/3519"}],"wp:attachment":[{"href":"https:\/\/machinedwasher.com\/el\/wp-json\/wp\/v2\/media?parent=3513"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/machinedwasher.com\/el\/wp-json\/wp\/v2\/product_brand?post=3513"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/machinedwasher.com\/el\/wp-json\/wp\/v2\/product_cat?post=3513"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/machinedwasher.com\/el\/wp-json\/wp\/v2\/product_tag?post=3513"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}