{"id":6475,"date":"2019-09-16T09:29:52","date_gmt":"2019-09-16T09:29:52","guid":{"rendered":"https:\/\/www.smetals.co.uk\/?post_type=product&#038;p=6475"},"modified":"2026-07-08T15:23:32","modified_gmt":"2026-07-08T15:23:32","slug":"m14-nyloc-insert-nut-nylon-lock-nut-a4-grade","status":"publish","type":"product","link":"https:\/\/www.smetals.co.uk\/product\/m14-nyloc-insert-nut-nylon-lock-nut-a4-grade\/","title":{"rendered":"M14 Nyloc Insert Nut Nylon Lock Nut A4 Grade"},"content":{"rendered":"<h2><strong>M14 Stainless Steel Nylon Lock Nuts<\/strong><\/h2>\n<p>Top quality stainless steel Nyloc nylon lock nuts supplied straight from Warrington, UK.<\/p>\n<p>Speciality Metals offer a massive range of metal products to suit all levels of budget and any size of job. These nuts are offered to compliment our range of <a href=\"https:\/\/www.smetals.co.uk\/product-category\/fasteners-fixings\/\" target=\"_blank\" rel=\"noopener noreferrer\">nuts, bolts &amp; washers.<\/a> We pride ourselves on our low prices and rapid fulfilment. Our fasteners are available from immediate stock, so dispatch would be fair immediate.<\/p>\n<p data-private=\"redact\" data-wt-guid=\"9a57f162-01f2-403f-9e9d-6c08f7d396a2\" data-pm-slice=\"1 1 []\">M14 Nyloc Insert Nuts offered by Speciality Metals are durable, versatile, and low maintenance. Designed for use in challenging environments such as marine environments, these nylon lock nuts are made of high-quality A4 Grade 316 steel that is corrosion-resistant. Nylon inserts add an extra layer of security, ensuring that the nut remains in place and does not loosen over time. They are a reliable fastening solution that offers long-lasting performance without the need for frequent maintenance. Whether you&#8217;re secure equipment, machinery, or other structures, M14 Nyloc Insert Nuts from Speciality Metals provide a reliable, secure solution.<\/p>\n<p>Key product details:<\/p>\n<ul>\n<li><strong>Standard \u2013 DIN 985<\/strong><\/li>\n<li><strong>Nut Type &#8211; P<\/strong><\/li>\n<li><strong>Fasteners Type \u2013 Nylon Nyloc Lock Nut<\/strong><\/li>\n<li><strong>Thread Diameter \u2013 M14<\/strong><\/li>\n<li><strong>Height \u2013 14mm<\/strong><\/li>\n<li><strong>Metric Thread \u2013 11.5mm<\/strong><\/li>\n<li><strong>Spanner Size \u2013 22mm<\/strong><\/li>\n<li><strong>Metal \u2013 Stainless Steel Grade 316 (A4)<\/strong><\/li>\n<\/ul>\n<h4>Why Choose Speciality Metals<\/h4>\n<div>\n<p>Speciality Metals is known to be the United Kingdom\u2019s best up-and-coming small-quantity metal company.<\/p>\n<\/div>\n<ul>\n<li><strong>FREE UK delivery on all orders<\/strong><\/li>\n<li><strong>Order dispatch within 24 hours of order<\/strong><\/li>\n<li><strong>Located in Warrington, UK which is the UK home of mesh and metals<\/strong><\/li>\n<li><strong>Our experienced staff are experts in the mesh market and care personally about your customer experience<\/strong><\/li>\n<\/ul>\n<p>Furthermore we stock a vast range of plain <a href=\"https:\/\/www.smetals.co.uk\/product-category\/mesh\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>wire mesh<\/strong><\/a> and <a href=\"https:\/\/www.smetals.co.uk\/product-category\/perforated-metal\/\"><strong>perforated metal<\/strong><\/a> options that compliment our sheet metal range perfectly.<\/p>\n<div>\n<p>Over 50,000 customers of Specialty Metals are provided with fast, friendly customer service every year. We\u2019re the place to try when you need metal of any shape and size. We\u2019re based in Warrington, UK. We pride ourselves on our rapid turnaround and a large range of options.<\/p>\n<\/div>\n<div>\n<p>&nbsp;<\/p>\n<\/div>\n<div>\n<hr \/>\n<h4>FAQs About This Product<\/h4>\n<\/div>\n<h2>Can <strong>Nylon Lock Nuts <\/strong>Be Used in Aerospace Applications?<\/h2>\n<p>Nylon lock nuts, commonly known as Nyloc nuts, can theoretically be used in aerospace applications, but there are stringent standards and considerations that must be met. Aerospace applications are highly critical, with zero tolerance for failure, so fasteners used in this industry usually require specialised testing, certification and quality control.<\/p>\n<ol>\n<li>\n<p><strong>Material Specification<\/strong>: The material of the nut must meet aerospace standards, which often go beyond regular industrial grades. Materials need to be fatigue-resistant, corrosion-resistant and able to withstand extreme temperature fluctuations.<\/p>\n<\/li>\n<li>\n<p><strong>Temperature Tolerance<\/strong>: Nylon inserts are generally not suitable for the high-temperature environments commonly encountered in aerospace applications. The nylon can lose its locking capability at high temperatures, and even special heat-resistant nylon may not be sufficient for certain aerospace requirements.<\/p>\n<\/li>\n<li>\n<p><strong>Vibration and Load<\/strong>: While Nyloc nuts are designed to resist vibration-induced loosening, aerospace applications often involve dynamic loads and vibrations that are more extreme than those encountered in other industries.<\/p>\n<\/li>\n<li>\n<p><strong>Certification and Traceability<\/strong>: Every component, including fasteners, used in aerospace applications often needs to be traceable and certified to ensure it meets the required specifications.<\/p>\n<\/li>\n<li>\n<p><strong>Specialised Alternatives<\/strong>: Aerospace applications often use specialised locking mechanisms such as castle nuts with cotter pins, deformed thread locknuts or other specialised self-locking fasteners designed to withstand the extreme conditions encountered in flight.<\/p>\n<\/li>\n<li>\n<p><strong>Regulatory Approval<\/strong>: Any fastener used in aerospace will need to meet specific Federal Aviation Administration (FAA) or other relevant international regulations, which are incredibly stringent and often require extensive documentation and testing.<\/p>\n<\/li>\n<\/ol>\n<h2>Are <strong>Nylon Lock Nuts <\/strong>Suitable for Medical Devices?<\/h2>\n<p>The suitability of nylon lock nuts, or Nyloc nuts, for medical devices depends on several key factors, including the specific requirements of the application, the materials used and regulatory compliance.\u00a0<\/p>\n<ol>\n<li>\n<p><strong>Biocompatibility<\/strong>: In medical applications, materials must often be biocompatible, meaning they should not trigger an immune response when in contact with bodily tissues or fluids. Depending on the application, standard Nyloc nuts may or may not meet this criterion.<\/p>\n<\/li>\n<li>\n<p><strong>Sterilisation<\/strong>: Medical devices frequently need to be sterilised, often at high temperatures or using chemical agents. The nylon insert in Nyloc nuts might not withstand these sterilisation methods without losing its locking capability.<\/p>\n<\/li>\n<li>\n<p><strong>Precision and Reliability<\/strong>: Medical devices often require high-precision components that are extremely reliable. While Nyloc nuts are generally reliable, they might not meet the stringent precision requirements needed in some medical devices.<\/p>\n<\/li>\n<li>\n<p><strong>Material Compatibility<\/strong>: If the device involves the use of aggressive chemicals or solutions, the material of the nut and the nylon insert must be compatible with these substances to ensure long-term performance and safety.<\/p>\n<\/li>\n<li>\n<p><strong>Regulatory Approval<\/strong>: Medical devices are subject to stringent regulations, such as FDA guidelines in the United States or CE marking in Europe. Any fasteners used must meet the specifications laid out by these and possibly other bodies.<\/p>\n<\/li>\n<li>\n<p><strong>Application Specific<\/strong>: Some medical devices are stationary and located in controlled environments, while others may be implantable or portable. The environment and stresses the device will encounter determine the suitability of Nyloc nuts.<\/p>\n<\/li>\n<li>\n<p><strong>Reusability<\/strong>: Many medical devices are single-use only, particularly those that come in direct contact with patients. In these cases, the longevity of the Nyloc nut&#8217;s locking feature may not be a concern.<\/p>\n<\/li>\n<\/ol>\n<h2>Are <strong>Nylon Lock Nuts <\/strong>Compatible with Acids or Alkalis?<\/h2>\n<p>The compatibility of nylon lock nuts, commonly known as Nyloc nuts, with acids or alkalis is contingent on multiple variables, including the material composition of the nut, the type and concentration of the chemical, as well as environmental factors like temperature and pressure. While the metal part, often made of stainless steel, may offer some resistance to corrosive substances, the nylon insert is generally sensitive to strong acids and alkalis and may degrade under such conditions. The duration of chemical exposure and the specific conditions, such as temperature and pressure, can also significantly influence the nut&#8217;s performance. Some nuts may come with specialised coatings for added chemical resistance, but these coatings themselves may have limitations and could interact with the nylon insert. Manufacturers often provide chemical compatibility charts, which can serve as a preliminary guide. However, for applications involving exposure to corrosive substances, consultation with material scientists or relevant experts is strongly recommended to assess the suitability of Nyloc nuts for the specific conditions.<\/p>\n<h2>How Are <strong>Nylon Lock Nuts <\/strong>Manufactured?<\/h2>\n<p>Nylon lock nuts, commonly known as Nyloc nuts, are manufactured through a multi-step process that involves both the creation of the metal nut and the insertion of a nylon collar. Below are the general steps involved in the manufacturing process:<\/p>\n<ol>\n<li>\n<p><strong>Material Selection<\/strong>: The first step is choosing the appropriate material for the nut, such as carbon steel, stainless steel, or other alloys, based on the intended application and required specifications.<\/p>\n<\/li>\n<li>\n<p><strong>Cold Forging<\/strong>: The selected material is typically cold-forged into the shape of a nut using high-pressure machinery. Cold forging helps improve the mechanical properties of the material.<\/p>\n<\/li>\n<li>\n<p><strong>Threading<\/strong>: After forging, the nut undergoes threading where internal threads are cut or rolled to match the threads of the bolt it will fasten.<\/p>\n<\/li>\n<li>\n<p><strong>Heat Treatment<\/strong>: Depending on the material and application, the nut may undergo heat treatment to enhance its mechanical properties like tensile strength, hardness and durability.<\/p>\n<\/li>\n<li>\n<p><strong>Surface Finishing<\/strong>: The nut may be coated or plated for added corrosion resistance or other characteristics. Common coatings include zinc, cadmium or a passivation layer for stainless steel.<\/p>\n<\/li>\n<li>\n<p><strong>Nylon Insertion<\/strong>: A ring of nylon material is then inserted into one end of the nut. This is usually done by heating the nut slightly and then pressing the nylon ring into the top portion, allowing it to cool and contract around the nylon, securing it in place.<\/p>\n<\/li>\n<li>\n<p><strong>Quality Control<\/strong>: Once manufactured, the Nyloc nuts are subjected to various quality control tests. These may include dimensional checks, hardness tests and torque tests to ensure the nylon insert effectively locks against a bolt when tightened.<\/p>\n<\/li>\n<li>\n<p><strong>Packaging<\/strong>: After passing quality control tests, the Nyloc nuts are packaged and prepared for shipping to distributors or end-users.<\/p>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<div>\n<p><em><strong>Check out our recent article &#8216;<\/strong><\/em><a href=\"https:\/\/www.smetals.co.uk\/unlocking-the-benefits-of-nyloc-nuts-the-ultimate-guide\/\" target=\"_blank\" rel=\"noopener\"><em><strong>Unlocking the Benefits of Nyloc Nuts: The Ultimate Guide<\/strong><\/em><\/a><em><strong>&#8216;<\/strong><strong> for a deeper dive into nyloc nuts. <\/strong><\/em><em><strong>Our goal for our blogs and help guides is to answer as many questions as possible to help to explain the possibilities of mesh to our customers.\u00a0<\/strong><\/em><\/p>\n<\/div>\n<p><em><strong>We are also very proud of our ever expanding <a href=\"https:\/\/www.youtube.com\/@SpecialityMetals\">YouTube<\/a> channel.\u00a0<\/strong><\/em><\/p>\n<div>\n<p><em><strong><a href=\"https:\/\/www.smetals.co.uk\/contact\/\" target=\"_blank\" rel=\"noopener noreferrer\">Contact us<\/a>\u00a0today if you have any questions at all. We are always really keen to help in any way that we can.\u00a0<\/strong><\/em><\/p>\n<p><em><strong>We are also very proud of our highly popular\u00a0<a href=\"https:\/\/www.ebay.co.uk\/itm\/303565335602?hash=item46ade76c32:g:52wAAOSwn35hVB0a&amp;amdata=enc:AQAHAAAA4FIP\/s70tTymwnOpAeuHgnIW\/BAqQpqeR6HroKjmP36\/\/mVroq+kLuGAaqDDsbaUfezU7AgwWXqeZQmNQ9vUrKB0HvNfHGAMnrWAV3zaYwfaFXdb1ZPy+LRANrk4r34iTPERZMCKc4gz2jaHnnKfbWTRLl8wCNCXv1nnvzGyQjL+LPk7pduZ2rCUZMa+9dwXbeWE8\/toTTxof0z3NBEHraiWUdiMaSNaodMXjF7JoSwCP86rmynJf3BJud112BCDM1VXm9EmoScImhggISQRN41JtQY58AhlfjQsHHCoaCVv|tkp:BFBMrKS3v79g\" target=\"_blank\" rel=\"noopener noreferrer\">eBay store<\/a>, check us out there too.<\/strong><\/em><\/p>\n<p><em><strong>Thank you for checking out our product.<\/strong><\/em><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p><em><strong>\u00a3 MULTIBUY SAVINGS &#8211; Order 3 For 10% Off<\/strong><\/em><\/p>\n<p><em><strong>\u2714 Specialists In Rapid Shipments Of Any Size<\/strong><\/em><\/p>\n<p><em><strong>\u2714 FREE UK Delivery Included<\/strong><\/em><\/p>\n<p><em><strong>\u2714 Immediate Express Dispatch From Stock<\/strong><\/em><\/p>\n<p><em><strong>\u2714 Tracked Delivery with Order Updates<\/strong><\/em><\/p>\n<p><em><strong>\u2714 30-Day Returns Accepted<\/strong><\/em><\/p>\n<p><strong>@ \u260f \u00a0<a href=\"https:\/\/www.smetals.co.uk\/contact\/\"><em>Larger Pack Quantities Available<\/em><\/a><\/strong><\/p>\n<p>Are you looking for a durable and secure fastening solution that can withstand even the harshest marine environments? Look no further than the M14 Nyloc Insert Nut Nylon Lock Nut from Speciality Metals. Made from high quality A4 Grade 316 Grade steel, this versatile nut is corrosion resistant and low maintenance, ensuring your project stays strong for longer. The nylon lock ensures extra security, giving you peace of mind that your fasteners won&#8217;t loosen over time. So, whether you&#8217;re working on a boat or simply in need of a reliable fastening solution, the M14 Nyloc Insert Nut Nylon Lock Nut is the perfect choice for your needs.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-20764 size-full\" src=\"https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2023\/05\/Heavy-Duty-SS304-Woven-Wire.jpg\" alt=\"\" width=\"1280\" height=\"224\" srcset=\"https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2023\/05\/Heavy-Duty-SS304-Woven-Wire.jpg 1280w, https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2023\/05\/Heavy-Duty-SS304-Woven-Wire-300x53.jpg 300w, https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2023\/05\/Heavy-Duty-SS304-Woven-Wire-1024x179.jpg 1024w, https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2023\/05\/Heavy-Duty-SS304-Woven-Wire-768x134.jpg 768w, https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2023\/05\/Heavy-Duty-SS304-Woven-Wire-600x105.jpg 600w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/p>\n","protected":false},"featured_media":24315,"comment_status":"open","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false},"product_brand":[],"product_cat":[462],"product_tag":[59,463,475],"class_list":["post-6475","product","type-product","status-publish","has-post-thumbnail","product_cat-nyloc-nylon-nuts","product_tag-316-stainless-steel","product_tag-fasteners","product_tag-nyloc-nuts","first","instock","taxable","shipping-taxable","purchasable","product-type-variable"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>M14 Nyloc Insert Nut Nylon Lock Nut A4 Grade - Speciality Metals<\/title>\n<meta name=\"description\" content=\"Quality M14 Nyloc nylon lock nut in A4 grade 316 stainless steel supplied from Warrington, UK. Massive range, great prices &amp; rapid dispatch.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.smetals.co.uk\/product\/m14-nyloc-insert-nut-nylon-lock-nut-a4-grade\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M14 Nyloc Insert Nut Nylon Lock Nut A4 Grade - Speciality Metals\" \/>\n<meta property=\"og:description\" content=\"Quality M14 Nyloc nylon lock nut in A4 grade 316 stainless steel supplied from Warrington, UK. Massive range, great prices &amp; rapid dispatch.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.smetals.co.uk\/product\/m14-nyloc-insert-nut-nylon-lock-nut-a4-grade\/\" \/>\n<meta property=\"og:site_name\" content=\"Speciality Metals\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-08T15:23:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.smetals.co.uk\/wp-content\/uploads\/2019\/09\/Nyloc-Nut-M14-20-Pack-Image.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.smetals.co.uk\\\/product\\\/m14-nyloc-insert-nut-nylon-lock-nut-a4-grade\\\/\",\"url\":\"https:\\\/\\\/www.smetals.co.uk\\\/product\\\/m14-nyloc-insert-nut-nylon-lock-nut-a4-grade\\\/\",\"name\":\"M14 Nyloc Insert Nut Nylon Lock Nut A4 Grade - Speciality Metals\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.smetals.co.uk\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.smetals.co.uk\\\/product\\\/m14-nyloc-insert-nut-nylon-lock-nut-a4-grade\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.smetals.co.uk\\\/product\\\/m14-nyloc-insert-nut-nylon-lock-nut-a4-grade\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.smetals.co.uk\\\/wp-content\\\/uploads\\\/2019\\\/09\\\/Nyloc-Nut-M14-20-Pack-Image.jpg\",\"datePublished\":\"2019-09-16T09:29:52+00:00\",\"dateModified\":\"2026-07-08T15:23:32+00:00\",\"description\":\"Quality M14 Nyloc nylon lock nut in A4 grade 316 stainless steel supplied from Warrington, UK. 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