{"id":3039,"date":"2021-12-08T10:54:12","date_gmt":"2021-12-08T10:54:12","guid":{"rendered":"https:\/\/monroeaerospace.com\/blog\/?p=3039"},"modified":"2021-12-08T10:54:12","modified_gmt":"2021-12-08T10:54:12","slug":"an-introduction-to-quarter-turn-fasteners","status":"publish","type":"post","link":"https:\/\/monroeaerospace.com\/blog\/an-introduction-to-quarter-turn-fasteners\/","title":{"rendered":"An Introduction to Quarter-Turn Fasteners"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-3040\" src=\"https:\/\/monroeaerospace.com\/blog\/wp-content\/uploads\/2021\/12\/cam-loc-collage-290x300.jpg\" alt=\"Quarter-turn fasteners\" width=\"290\" height=\"300\" srcset=\"https:\/\/monroeaerospace.com\/blog\/wp-content\/uploads\/2021\/12\/cam-loc-collage-290x300.jpg 290w, https:\/\/monroeaerospace.com\/blog\/wp-content\/uploads\/2021\/12\/cam-loc-collage.jpg 348w\" sizes=\"auto, (max-width: 290px) 100vw, 290px\" \/>Fasteners come in many different styles. Some of them are simple, whereas others are more complex. Traditional bolts, for instance, feature a simple style consisting of a threaded shank and an expanded head. There are also quarter-turn fasteners, however. Quarter-turn fasteners feature a more complex style that allows for a 90-degree rotation during installation.<\/p>\n<h2>What Are Quarter-Turn Fasteners?<\/h2>\n<p>Quarter-turn fasteners are commonly used in the aerospace industry. They live up to their namesake by requiring a 90-degree or quarter-turn rotation during installation. Quarter-turn fasteners still have a head, but they don&#8217;t have the same threaded shank as other fasteners like bolts. Instead, they feature a smooth body that&#8217;s affixed with an enclosed cam lock.<\/p>\n<p>Contrary to popular belief, quarter-turn fasteners aren&#8217;t new. They&#8217;ve been around for nearly a century. Quarter-turn fasteners were invented by William Dzus in the 1930s. Since then, different types of quarter-turn fasteners have been released, but they all use the same 90-degree turn for installation.<\/p>\n<h2>How Quarter-Turn Fasteners Work<\/h2>\n<p>Also known as turnlock fasteners, quarter-turn fasteners work by engaging a cross pin. You can install them using a screwdriver or similar tool with the appropriate bit. As you turn the head with a tool, the cross pin will rise up the enclosed cam. This movement will result in a loading action. Once you&#8217;ve turned the head a complete 90 degrees, the cross pin will fall into the detent.<\/p>\n<p>Quarter-turn fasteners contain a spring. The spring is responsible for applying force to the cross pin. Normally, the cross pin is completely concealed and enclosed within the quarter-turn fastener&#8217;s body. Turning the head with a tool, though, will engage the spring while subsequently pushing the cross pin into the detent. And once the cross pin has fallen into the detent, the quarte-turn fastener will essentially be locked in place.<\/p>\n<p><strong>Benefits of quarter-turn fasteners include the following:<\/strong><\/p>\n<ul>\n<li>Supports installation and removal with screwdrivers or other common tools<\/li>\n<li>Resistant to loosening when exposed to vibrations<\/li>\n<li>Very strong locking feature<\/li>\n<li>Eliminates the need for rivetting<\/li>\n<li>Fast operating<\/li>\n<li>Available in a variety of materials and sizes<\/li>\n<\/ul>\n<h2>In Conclusion<\/h2>\n<p>In the aerospace industry, quarter-turn fasteners are often preferred over other types of fasteners. Airplanes produce strong vibrations. While vibrations can cause some types of fasteners to loosen, quarter-turn fasteners are resistant to such loosening. They feature a cross pin that will fall into the detent when the head is turned 90 degrees.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fasteners come in many different styles. Some of them are simple, whereas others are more complex. Traditional bolts, for instance, feature a simple style consisting of a threaded shank and an expanded head. There are also quarter-turn fasteners, however. Quarter-turn &hellip; <a class=\"continue-reading\" href=\"https:\/\/monroeaerospace.com\/blog\/an-introduction-to-quarter-turn-fasteners\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":3040,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-3039","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products"],"acf":[],"_links":{"self":[{"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/posts\/3039","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/comments?post=3039"}],"version-history":[{"count":7,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/posts\/3039\/revisions"}],"predecessor-version":[{"id":3047,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/posts\/3039\/revisions\/3047"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/media\/3040"}],"wp:attachment":[{"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/media?parent=3039"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/categories?post=3039"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/tags?post=3039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}