{"id":18479,"date":"2026-06-02T00:24:29","date_gmt":"2026-06-01T18:54:29","guid":{"rendered":"https:\/\/aluminiummagazine.com\/mag\/?p=18479"},"modified":"2026-06-02T00:24:31","modified_gmt":"2026-06-01T18:54:31","slug":"what-is-aluminum-cotter-pin-uses-types","status":"publish","type":"post","link":"https:\/\/aluminiummagazine.com\/mag\/aluminium\/pins\/what-is-aluminum-cotter-pin-uses-types.html","title":{"rendered":"What Is an Aluminum Cotter Pin? Uses, Types and Applications"},"content":{"rendered":"\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Article Index<\/h2><nav><ul><li class=\"\"><a href=\"#what-is-an-aluminum-cotter-pin\">What Is an Aluminum Cotter Pin?<\/a><\/li><li class=\"\"><a href=\"#how-does-an-aluminum-cotter-pin-work\">How Does an Aluminum Cotter Pin Work?<\/a><\/li><li class=\"\"><a href=\"#common-types-of-aluminum-cotter-pins\">Common Types of Aluminum Cotter Pins<\/a><\/li><li class=\"\"><a href=\"#aluminum-cotter-pin-uses-and-applications\">Aluminum Cotter Pin Uses and Applications<\/a><\/li><li class=\"\"><a href=\"#advantages-of-aluminum-cotter-pins\">Advantages of Aluminum Cotter Pins<\/a><\/li><li class=\"\"><a href=\"#aluminum-vs-steel-cotter-pins-quick-comparison\">Aluminum vs Steel Cotter Pins (Quick Comparison)<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-an-aluminum-cotter-pin\">What Is an Aluminum Cotter Pin?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An <strong>aluminum cotter pin<\/strong> \u2013 also known as a <strong>split pin<\/strong> \u2013 is a small, lightweight fastener made from aluminum or aluminum alloys. It consists of a semicircular head and two prongs (legs) that are split apart. Once inserted through a hole in a bolt, shaft, or other component, the two legs are bent outward to lock the pin in place. This simple yet effective design prevents nuts from loosening, secures moving parts, and ensures mechanical assemblies remain intact under vibration or motion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">While steel cotter pins are more common in heavy\u2011duty applications, aluminum cotter pins are chosen when <strong>weight reduction<\/strong>, <strong>corrosion resistance<\/strong>, or <strong>non\u2011magnetic properties<\/strong> are critical. They are widely used in aerospace, marine, military, and high\u2011performance automotive sectors. For a broader comparison of aluminum versus steel in terms of weight, durability, and sustainability, see <a href=\"https:\/\/aluminiummagazine.com\/mag\/aluminium\/advantages-of-aluminum-over-steel-for-lightweight-durability-sustainability.html\"><strong>Advantages of Aluminum Over Steel for Lightweight Durability &amp; Sustainability<\/strong><\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-does-an-aluminum-cotter-pin-work\"><strong>How Does an Aluminum Cotter Pin Work?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The working principle of an aluminum cotter pin is straightforward:<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Insertion<\/strong> \u2013 The pin is pushed through a pre\u2011drilled hole (often in a castellated nut or a clevis pin) until the head rests against the component.<\/li>\n\n\n\n<li><strong>Spreading<\/strong> \u2013 Using pliers or fingers, the two prongs are bent apart in opposite directions \u2013 typically one leg is bent over the end of the bolt\/shaft, and the other leg is bent in the opposite direction or wrapped around the side.<\/li>\n\n\n\n<li><strong>Locking<\/strong> \u2013 Once bent, the pin cannot slide back through the hole. It mechanically blocks the rotation or axial movement of the nut or pin, keeping the assembly secure even under constant vibration.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/06\/aluminum-cotter-pin-castellated-nut-diagram-1024x576.webp\" alt=\"Technical mechanics diagram showing an aluminum cotter pin inserted through a castellated nut and bolt, with its retention legs bent outward to prevent rotation and axial motion.\" class=\"wp-image-18482\" srcset=\"https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/06\/aluminum-cotter-pin-castellated-nut-diagram-1024x576.webp 1024w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/06\/aluminum-cotter-pin-castellated-nut-diagram-300x169.webp 300w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/06\/aluminum-cotter-pin-castellated-nut-diagram-768x432.webp 768w, https:\/\/aluminiummagazine.com\/mag\/wp-content\/uploads\/2026\/06\/aluminum-cotter-pin-castellated-nut-diagram.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">An aluminum cotter pin (split pin) inserted through a hole in a castellated nut assembly. Bending the retention legs outward blocks both rotation and axial motion, creating a vibration-proof lock.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Aluminum\u2019s malleability makes bending easy without cracking, yet certain heat\u2011treated alloys (e.g., 7075) retain enough spring strength to hold their shape reliably.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"common-types-of-aluminum-cotter-pins\">Common Types of Aluminum Cotter Pins<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Aluminum cotter pins are available in several variants based on material, surface treatment, and design.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-pure-aluminum-cotter-pins\">1. Pure Aluminum Cotter Pins<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Made from <strong>1100<\/strong> or similar commercially pure aluminum.<\/li>\n\n\n\n<li>Extremely soft and highly corrosion resistant.<\/li>\n\n\n\n<li>Suitable for non\u2011critical, light\u2011duty applications (e.g., hobby projects, outdoor furniture).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-aluminum-alloy-cotter-pins\">2. Aluminum Alloy Cotter Pins<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>2024 aluminum alloy<\/strong> \u2013 High strength, good fatigue resistance, often used in aircraft structures.<\/li>\n\n\n\n<li><strong>6061 aluminum alloy<\/strong> \u2013 Good balance of strength, workability, and corrosion resistance; common in general manufacturing.<\/li>\n\n\n\n<li><strong>7075 aluminum alloy<\/strong> \u2013 Very high strength (comparable to many steels), used in aerospace and military applications where weight is critical. Learn more about this alloy in our dedicated guide: <a href=\"https:\/\/aluminiummagazine.com\/mag\/aluminium\/aluminium-7075.html\"><strong>Aluminium 7075 \u2013 Properties &amp; Uses<\/strong><\/a>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-anodized-aluminum-cotter-pins\">3. Anodized Aluminum Cotter Pins<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Treated with an electrochemical process that thickens the natural oxide layer.<\/li>\n\n\n\n<li><strong>Benefits<\/strong> \u2013 Increased surface hardness, superior corrosion resistance, and optional color coding (e.g., gold, black, red) for easy identification.<\/li>\n\n\n\n<li>For a comparison of anodizing with other finishing methods, read <a href=\"https:\/\/aluminiummagazine.com\/mag\/magazine\/powder-coating-vs-anodizing.html\"><strong>Powder Coating vs Anodizing<\/strong><\/a>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-non-anodized-aluminum-cotter-pins\">4. Non\u2011Anodized Aluminum Cotter Pins<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Natural oxide layer only.<\/li>\n\n\n\n<li>Lower cost but less durable in harsh environments (saltwater, chemicals).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-standard-vs-oversize-head-designs\">5. Standard vs. Oversize Head Designs<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Standard head<\/strong> \u2013 Flush or slightly raised, fits most applications.<\/li>\n\n\n\n<li><strong>Oversize head<\/strong> \u2013 Larger bearing surface, prevents pull\u2011through in soft materials.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"aluminum-cotter-pin-uses-and-applications\">Aluminum Cotter Pin Uses and Applications<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Aluminum cotter pins are not for every job, but they excel in specific scenarios where their unique properties matter.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"aerospace-aviation\">Aerospace &amp; Aviation<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Securing control linkages, landing gear components, and engine accessories.<\/li>\n\n\n\n<li>Weight savings of up to 60% compared to steel pins directly improve fuel efficiency and payload capacity.<\/li>\n\n\n\n<li>Alloys like 7075\u2011T6 are common in military and civilian aircraft. Discover <a href=\"https:\/\/aluminiummagazine.com\/mag\/aluminium\/parts\/why-aluminum-works-for-aircraft-parts.html\"><strong>Why Aluminum Works for Aircraft Parts<\/strong><\/a>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"marine-equipment\">Marine Equipment<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sailboat rigging, outboard motor mounts, and trailer hardware.<\/li>\n\n\n\n<li>Aluminum\u2019s natural corrosion resistance prevents rust in saltwater environments.<\/li>\n\n\n\n<li>Anodized versions are preferred for long\u2011term exposure.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"military-defense\">Military &amp; Defense<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lightweight fasteners for portable equipment, drones, and ground vehicles.<\/li>\n\n\n\n<li>Non\u2011magnetic property is critical for mine\u2011detection devices and sensitive electronic housings.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"high-performance-automotive-motorsports\">High\u2011Performance Automotive &amp; Motorsports<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Securing brake caliper pins, suspension links, and engine bay components where every gram counts.<\/li>\n\n\n\n<li>Used in racing motorcycles, formula cars, and aftermarket performance parts.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"general-industrial-light-duty\">General Industrial &amp; Light\u2011Duty<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Outdoor furniture, bicycle components, agricultural machinery (non\u2011critical stress areas).<\/li>\n\n\n\n<li>Electrical enclosures where non\u2011magnetic fasteners are required.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"consumer-goods\">Consumer Goods<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Telescopic ladders, camping gear, and folding tools \u2013 aluminum cotter pins keep pivot points secure without adding weight.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"advantages-of-aluminum-cotter-pins\">Advantages of Aluminum Cotter Pins<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">Advantage<\/th><th>Explanation<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Lightweight<\/strong><\/td><td>Density of <strong>aluminum (\u22482.70 g\/cm\u00b3)<\/strong> is about one\u2011third that of <strong>steel (\u22487.85 g\/cm\u00b3)<\/strong>. Ideal for aerospace, racing, and portable devices.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Corrosion Resistance<\/strong><\/td><td>Naturally forms a protective oxide layer. Performs exceptionally well in humid, coastal, or chemical environments without rusting.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Non\u2011Magnetic<\/strong><\/td><td>Essential for MRI machines, compass housings, electronic warfare systems, and any application where magnetic interference must be avoided. (Verify: <a href=\"https:\/\/aluminiummagazine.com\/mag\/faqs\/is-aluminum-a-magnetic-material.html\"><strong>Is Aluminum a Magnetic Material?<\/strong><\/a>)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Good Thermal &amp; Electrical Conductivity<\/strong><\/td><td>Useful in certain electronic or heat\u2011exchange assemblies (though rarely the primary function of a cotter pin).<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Easily Bendable<\/strong><\/td><td>Malleable enough to be installed and removed by hand or with basic pliers, reducing assembly time.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Aesthetic Options<\/strong><\/td><td>Anodizing allows color coding for different sizes or applications \u2013 e.g., red for 1\/8\u2033, blue for 3\/16\u2033.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"aluminum-vs-steel-cotter-pins-quick-comparison\">Aluminum vs Steel Cotter Pins (Quick Comparison)<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">Feature<\/th><th class=\"has-text-align-center\" data-align=\"center\">Aluminum Cotter Pin<\/th><th class=\"has-text-align-center\" data-align=\"center\">Steel Cotter Pin<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Tensile Strength<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Lower (varies by alloy: 200\u2013570 MPa)<\/td><td class=\"has-text-align-center\" data-align=\"center\">Higher (carbon steel: 400\u2013700 MPa; stainless: 500\u20131000 MPa)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Weight<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Very light (\u22481\/3 of steel)<\/td><td class=\"has-text-align-center\" data-align=\"center\">Heavy<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Corrosion Resistance<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Excellent (especially anodized)<\/td><td class=\"has-text-align-center\" data-align=\"center\">Poor for carbon steel; good for stainless or galvanized<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Magnetic<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Non\u2011magnetic<\/td><td class=\"has-text-align-center\" data-align=\"center\">Magnetic (except some austenitic stainless steels)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Cost<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Moderate to high (alloy dependent)<\/td><td class=\"has-text-align-center\" data-align=\"center\">Low to moderate (carbon steel is cheap)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Typical Applications<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Aerospace, marine, racing, lightweight mechanisms<\/td><td class=\"has-text-align-center\" data-align=\"center\">Automotive, construction, agricultural machinery, general industrial<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Installation Ease<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Very easy to bend<\/td><td class=\"has-text-align-center\" data-align=\"center\">Requires more force to bend; may need proper pliers<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Temperature Resistance<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\">Good up to ~200\u00b0C; loses strength above<\/td><td class=\"has-text-align-center\" data-align=\"center\">Excellent up to 500\u00b0C+ for stainless<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Verdict:<\/strong> Choose <strong>aluminum<\/strong> when weight, corrosion, or non\u2011magnetic properties are critical. Choose <strong>steel<\/strong> when maximum strength, low cost, or high\u2011temperature resistance is the priority.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div style=\"height:75px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"fa-qs\">FAQs<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q1: Can I use an aluminum cotter pin in a high\u2011vibration engine?<\/strong><br>It depends. In low\u2011stress, non\u2011rotating applications (e.g., securing a linkage pivot), high\u2011strength alloys like 7075 can work. For high\u2011stress engine components (connecting rods, suspension), steel is safer. Always follow original equipment manufacturer (OEM) recommendations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q2: Do aluminum cotter pins rust?<\/strong><br>No. Aluminum does not \u201crust\u201d like iron or steel. It can oxidize (forming a dull gray film), but this oxide layer actually protects the metal beneath. In saltwater, anodized aluminum is highly recommended.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q3: Are anodized aluminum cotter pins stronger than non\u2011anodized?<\/strong><br>Anodizing improves surface hardness and wear resistance, but it does not significantly increase tensile or shear strength. The base alloy determines strength.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q4: What is the typical size range for aluminum cotter pins?<\/strong><br>Common diameters: 1\/16\u2033 (1.6 mm), 3\/32\u2033 (2.4 mm), 1\/8\u2033 (3.2 mm), 5\/32\u2033 (4.0 mm), and 3\/16\u2033 (4.8 mm). Lengths range from \u00bd\u2033 (12 mm) to 3\u2033 (76 mm). Custom sizes are available from specialty suppliers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q5: Can I reuse an aluminum cotter pin?<\/strong><br>Generally <strong>not recommended<\/strong>. Bending the prongs work\u2011hardens aluminum and can cause cracking. For safety\u2011critical applications, always use a new cotter pin after removal.<\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q6: Where can I buy aluminum cotter pins?<\/strong><br>Industrial suppliers (McMaster\u2011Carr, Grainger), aircraft hardware specialists (Aircraft Spruce, Wicks), and online marketplaces (Amazon, eBay). For alloys like 7075\u2011T6, aerospace supply houses are your best bet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q7: How do I remove a bent aluminum cotter pin?<\/strong><br>Use diagonal cutters to snip the bent legs near the head, then pull the head through the hole. Alternatively, straighten the legs with pliers \u2013 but be careful not to break them inside the hole.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><em>This guide covers everything you need to know about aluminum cotter pins. Whether you\u2019re designing a lightweight aircraft, repairing a boat trailer, or simply looking for a corrosion\u2011proof fastener, aluminum cotter pins offer a reliable, high\u2011performance solution. Always match the alloy and finish to your specific environment and load requirements.<\/em><\/p><div class=\"pai-ad\" style=\"min-height:250px;visibility:hidden;\"><span style=\"display: block; text-align: center; font-size: 10px; margin: 0 0 10px 0; color: #999999;\">Ads<\/span>\r\n<!-- Display-300x250-1 -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:inline-block;width:300px;height:250px\"\r\n     data-ad-client=\"ca-pub-3838168351244230\"\r\n     data-ad-slot=\"9933646018\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div><script>document.addEventListener(\"DOMContentLoaded\",function(){\n        if(window.innerWidth <= 768){\n            if (\"immediate\" === \"delay\") {\n                setTimeout(function(){document.querySelectorAll(\".pai-ad\").forEach(el=>el.style.visibility=\"visible\")},0);\n            } else if (\"immediate\" === \"scroll\") {\n                window.addEventListener(\"scroll\",function(){\n                    let s=window.scrollY\/(document.body.scrollHeight-window.innerHeight);\n                    if(s>0.1){\n                        document.querySelectorAll(\".pai-ad\").forEach(el=>el.style.visibility=\"visible\");\n                    }\n                });\n            } else {\n                document.querySelectorAll(\".pai-ad\").forEach(el=>el.style.visibility=\"visible\");\n            }\n        } else {\n            document.querySelectorAll(\".pai-ad\").forEach(el=>el.remove());\n        }\n    });<\/script>","protected":false},"excerpt":{"rendered":"<p>What Is an Aluminum Cotter Pin? An aluminum cotter pin \u2013 also known as a split pin \u2013 is a small, lightweight fastener made from aluminum or aluminum alloys. It consists of a semicircular head and two prongs (legs) that are split apart. Once inserted through a hole in a bolt, shaft, or other component, &#8230; <a title=\"What Is an Aluminum Cotter Pin? Uses, Types and Applications\" class=\"read-more\" href=\"https:\/\/aluminiummagazine.com\/mag\/aluminium\/pins\/what-is-aluminum-cotter-pin-uses-types.html\" aria-label=\"Read more about What Is an Aluminum Cotter Pin? Uses, Types and Applications\">Read more<\/a><\/p>\n","protected":false},"author":12,"featured_media":18481,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2560],"tags":[4166],"class_list":["post-18479","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pins","tag-cotter-pin"],"_links":{"self":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts\/18479","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/comments?post=18479"}],"version-history":[{"count":1,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts\/18479\/revisions"}],"predecessor-version":[{"id":18483,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/posts\/18479\/revisions\/18483"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/media\/18481"}],"wp:attachment":[{"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/media?parent=18479"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/categories?post=18479"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminiummagazine.com\/mag\/wp-json\/wp\/v2\/tags?post=18479"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}