{"id":151,"date":"2017-04-19T10:05:17","date_gmt":"2017-04-19T10:05:17","guid":{"rendered":"http:\/\/connectingrodrepair.com\/blog\/?p=151"},"modified":"2025-08-05T05:50:43","modified_gmt":"2025-08-05T05:50:43","slug":"metal-stitching-and-thread-repair-inserts","status":"publish","type":"post","link":"https:\/\/www.connectingrodrepair.com\/blog\/metal-stitching-and-thread-repair-inserts\/","title":{"rendered":"Metal Stitching and Thread Repair Inserts &#8211; RA Power Solutions"},"content":{"rendered":"\n<p>One of our clients informed <strong><a href=\"https:\/\/rapowersolutions.com\/\">RA Power Solutions<\/a><\/strong> about damage to the cam case cover of a MAN diesel engine on board a vessel sailing near China. After reviewing the details and photographs, we observed that the cam case cover had broken into pieces. We also found that the threads on the engine body and the dowel pin were damaged.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"932\" height=\"432\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Cracked-Housing.jpg\" alt=\"Cracked Housing of Engine Block\" class=\"wp-image-152\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Cracked-Housing.jpg 932w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Cracked-Housing-300x139.jpg 300w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Cracked-Housing-768x356.jpg 768w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><figcaption class=\"wp-element-caption\"><strong>Cracked Housing of Engine Block<\/strong><\/figcaption><\/figure><\/div>\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"390\" height=\"294\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Broken-Area.jpg\" alt=\"Broken Area\" class=\"wp-image-153\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Broken-Area.jpg 390w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Broken-Area-300x226.jpg 300w\" sizes=\"(max-width: 390px) 85vw, 390px\" \/><figcaption class=\"wp-element-caption\"><strong>Broken Area<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"474\" height=\"370\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Damaged-upper-threads.jpg\" alt=\"Damaged Upper Threads\" class=\"wp-image-154\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Damaged-upper-threads.jpg 474w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Damaged-upper-threads-300x234.jpg 300w\" sizes=\"(max-width: 474px) 85vw, 474px\" \/><figcaption class=\"wp-element-caption\"><strong>Damaged Upper Threads<\/strong><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">RA Power Solutions Executes Onboard Repair of Engine Block and Cam Case Cover Sitting Area:<\/h2>\n\n\n\n<p>RA Power Solutions deputed their team of technicians on board the vessel, and they executed the <strong><a href=\"https:\/\/www.connectingrodrepair.com\/blog\/lock-and-stitch-cast-iron-repair-metal-surgery-cracked-engine-block-repair-ra-power-solutions\/\">repair of engine block<\/a><\/strong>, cam case cover sitting area by the following procedure:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The broken bolt which remained inside the thread hole was drilled out.<\/li>\n\n\n\n<li>The damaged threads on cam cover sitting area on entablature was removed by drilling new blind holes, suiting the new M12 Helicoil thread inserts.<\/li>\n\n\n\n<li>Re-tap holes for the new M12 Helicoil thread inserts was done carefully.<\/li>\n\n\n\n<li>New M12 Helicoil thread inserts were installed in the engine frame\/ entablature.<\/li>\n\n\n\n<li>The 2 guide pins for the roller guide housing were removed, taking due precaution.<\/li>\n\n\n\n<li>Technicians installed a new roller guide housing using correct M12 hexagon bolts. They also included the newly introduced 10 mm washers.<\/li>\n\n\n\n<li>Technicians completed the final alignment of the roller guide housing. They then tightened the bolts using the correct tightening torque.<\/li>\n\n\n\n<li>Technicians drilled two \u00f88 mm guide pinholes in both the roller guide housing and the engine frame. Afterwards, they installed new guide pins.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-2 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Repair-of-Threads-on-Engine-Block-Under-Process-768x1024.jpg\" alt=\"repair of Threads on Engine Block Under Process\" class=\"wp-image-155\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Repair-of-Threads-on-Engine-Block-Under-Process-768x1024.jpg 768w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Repair-of-Threads-on-Engine-Block-Under-Process-225x300.jpg 225w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Repair-of-Threads-on-Engine-Block-Under-Process.jpg 960w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><figcaption class=\"wp-element-caption\"><strong>repair of Threads on Engine Block Under Process<\/strong><\/figcaption><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"800\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Repair-of-Thread-Hole-by-Metal-Stitching.jpg\" alt=\"Repair of Thread Hole by Metal Stitching\" class=\"wp-image-156\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Repair-of-Thread-Hole-by-Metal-Stitching.jpg 600w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Repair-of-Thread-Hole-by-Metal-Stitching-225x300.jpg 225w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><figcaption class=\"wp-element-caption\"><strong>Repair of Thread Hole by Metal Stitching<\/strong><\/figcaption><\/figure><\/div><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">What Is Metal Stitching?<\/h2>\n\n\n\n<p>Metal stitching, also known as metal locking, uses a cold repair technique to fix cracked or broken cast components. This method eliminates the need for welding. The process restores original strength and ensures pressure-tight sealing through mechanical locking of stitching pins and studs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Advantages of Metal Stitching Over Welding<\/strong>:<\/h3>\n\n\n\n<ul>\n<li>No heat means no distortion, warping, or residual stress<\/li>\n\n\n\n<li>Maintains alignment and surface profile of the original cast<\/li>\n\n\n\n<li>Suitable for cast iron, steel, aluminum, and other alloys<\/li>\n\n\n\n<li>Creates permanent, pressure- and liquid-tight repairs<\/li>\n\n\n\n<li>Enables on-site repairs with minimal disassembly<\/li>\n\n\n\n<li>Often stronger than the original material<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-3 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Damaged-Thread-Hole-Under-Metal-Stitching-and-Metal-Locking-768x1024.jpg\" alt=\"Damaged Thread Hole Under Metal Stitching and Metal Locking\" class=\"wp-image-157\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Damaged-Thread-Hole-Under-Metal-Stitching-and-Metal-Locking-768x1024.jpg 768w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Damaged-Thread-Hole-Under-Metal-Stitching-and-Metal-Locking-225x300.jpg 225w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Damaged-Thread-Hole-Under-Metal-Stitching-and-Metal-Locking.jpg 960w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><figcaption class=\"wp-element-caption\">Damaged Thread Hole Under Metal Stitching and Metal Locking<\/figcaption><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Metal-Stitching-of-Bottom-Area-of-Threaded-Hole-to-Give-Extra-Strength.jpg\" alt=\"Metal Stitching of Bottom Area of Threaded Hole to Give Extra Strength\" class=\"wp-image-158\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Metal-Stitching-of-Bottom-Area-of-Threaded-Hole-to-Give-Extra-Strength.jpg 800w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Metal-Stitching-of-Bottom-Area-of-Threaded-Hole-to-Give-Extra-Strength-300x169.jpg 300w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Metal-Stitching-of-Bottom-Area-of-Threaded-Hole-to-Give-Extra-Strength-768x432.jpg 768w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><figcaption class=\"wp-element-caption\">Metal Stitching of Bottom Area of Threaded Hole to Give Extra Strength<\/figcaption><\/figure><\/div><\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Our Process at RA Power Solutions:<\/h3>\n\n\n\n<ul>\n<li><strong>Damage Inspection &amp; Assessment: <\/strong>Document cracks and thread damage<\/li>\n\n\n\n<li><strong>Thread Repair via Stitching &amp; Inserts:<\/strong> Use stitching keys and Helicoil\/insert methods<\/li>\n\n\n\n<li><strong>Post-Repair Finishing:<\/strong> Grind and align to restore original surface<\/li>\n\n\n\n<li><strong>Testing &amp; Validation: <\/strong>Conduct pressure or stress tests to ensure integrity.<\/li>\n<\/ul>\n\n\n\n<p>With decades of experience and advanced cold-repair tools, <strong>RA Power Solutions<\/strong> delivers efficient and durable repairs without removing heavy castings.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Cam-Cover-Sitting-Area-of-Engine-BLock-After-Repair.jpg\" alt=\"Cam Cover Sitting Area of Engine Block After Repair\" class=\"wp-image-159\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Cam-Cover-Sitting-Area-of-Engine-BLock-After-Repair.jpg 800w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Cam-Cover-Sitting-Area-of-Engine-BLock-After-Repair-300x169.jpg 300w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2017\/04\/Cam-Cover-Sitting-Area-of-Engine-BLock-After-Repair-768x432.jpg 768w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><figcaption class=\"wp-element-caption\">Cam Cover Sitting Area of Engine Block After Repair<\/figcaption><\/figure><\/div>\n\n\n<p>For more on <strong>metal stitching<\/strong> and metal locking, <strong><a href=\"https:\/\/turbineshaft.in\/blog\/2018\/05\/05\/metal-stitching-and-metal-locking-of-engine-block-by-ra-power-solutions-india\/\">metal stitching of engine block<\/a><\/strong> contact us today email us at <strong>rajshahani@rapowersolutions.com<\/strong>, <strong>info@rapowersolutions.com<\/strong>, or call us at <strong>+91 9582647131<\/strong> or <strong>+91 9810012383.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQs:<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1754301059285\"><strong class=\"schema-faq-question\">1. <strong>What is metal stitching, and how does it work?<\/strong><\/strong> <p class=\"schema-faq-answer\"><strong><a href=\"https:\/\/rapowersolutions.com\/BlogDetails.aspx?blogname=Metal-Locking-Metal-Stitching-of-Broken-Component-Metal-Stitching-Cast-Iron-Metal-Stitching-Onsite-RA-Power-Solutions\">Metal stitching<\/a><\/strong>, also known as cold metal locking, is a mechanical repair process used to fix cracks in cast iron or cast steel components. It involves inserting stitching pins and locks to restore structural integrity\u2014<strong>without welding or heat<\/strong>.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1754301088989\"><strong class=\"schema-faq-question\">2. <strong>When should I use thread repair inserts like Helicoil?<\/strong><\/strong> <p class=\"schema-faq-answer\">You should use thread repair inserts when original threads in an engine block, casing, or housing become stripped, worn out, or damaged. Helicoils restore the thread&#8217;s strength and allow <strong>secure fastening<\/strong>, even under high torque.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1754301110060\"><strong class=\"schema-faq-question\">3. <strong>Is metal stitching better than welding for cast iron repair?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes. For cast iron and other brittle materials, metal stitching is safer and more reliable than welding. It <strong>avoids heat distortion, cracking, and structural weakening<\/strong>, which are common risks with welded repairs.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1754301132628\"><strong class=\"schema-faq-question\">4. <strong>Can RA Power Solutions perform these repairs on-site?<\/strong><\/strong> <p class=\"schema-faq-answer\">Absolutely. <strong>RA Power Solutions<\/strong> specializes in <strong><a href=\"https:\/\/www.marineengine.in\/blog\/2025\/06\/16\/what-is-metal-stitching-and-metal-locking-a-trusted-cold-repair-technique-ra-power-solutions\/\">on-site metal stitching<\/a> and thread repair<\/strong>, including work on marine vessels, power plants, offshore rigs, and remote industrial sites\u2014without the need to remove the equipment.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1754301275429\"><strong class=\"schema-faq-question\">5. <strong>What components can be repaired using metal stitching and thread inserts?<\/strong><\/strong> <p class=\"schema-faq-answer\">These techniques can repair <strong>engine blocks, cylinder heads, gearboxes, cam case covers, pump casings, compressors<\/strong>, and more. These methods can typically restore any cracked or damaged cast iron or steel component.<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>One of our clients informed RA Power Solutions about damage to the cam case cover of a MAN diesel engine on board a vessel sailing near China. After reviewing the details and photographs, we observed that the cam case cover had broken into pieces. We also found that the threads on the engine body and &hellip; <a href=\"https:\/\/www.connectingrodrepair.com\/blog\/metal-stitching-and-thread-repair-inserts\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Metal Stitching and Thread Repair Inserts &#8211; RA Power Solutions&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":2193,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"link","meta":{"footnotes":""},"categories":[417,163,427,420,426,430,301,423,425],"tags":[222,419,418,56,428,421,107,386,59,429,300,422,424],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Metal Stitching &amp; Thread Repair Inserts for Engine Block<\/title>\n<meta name=\"description\" content=\"Discover how metal stitching and thread repair inserts are used for crack repairs in engine blocks, cylinder heads, and other cast iron.\" \/>\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.connectingrodrepair.com\/blog\/metal-stitching-and-thread-repair-inserts\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Metal Stitching &amp; 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Can RA Power Solutions perform these repairs on-site?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Absolutely. <strong>RA Power Solutions<\/strong> specializes in <strong><a href=\"https:\/\/www.marineengine.in\/blog\/2025\/06\/16\/what-is-metal-stitching-and-metal-locking-a-trusted-cold-repair-technique-ra-power-solutions\/\">on-site metal stitching<\/a> and thread repair<\/strong>, including work on marine vessels, power plants, offshore rigs, and remote industrial sites\u2014without the need to remove the equipment.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.connectingrodrepair.com\/blog\/metal-stitching-and-thread-repair-inserts\/#faq-question-1754301275429","position":5,"url":"https:\/\/www.connectingrodrepair.com\/blog\/metal-stitching-and-thread-repair-inserts\/#faq-question-1754301275429","name":"5. What components can be repaired using metal stitching and thread inserts?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"These techniques can repair <strong>engine blocks, cylinder heads, gearboxes, cam case covers, pump casings, compressors<\/strong>, and more. These methods can typically restore any cracked or damaged cast iron or steel component.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/posts\/151"}],"collection":[{"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/comments?post=151"}],"version-history":[{"count":21,"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/posts\/151\/revisions"}],"predecessor-version":[{"id":2380,"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/posts\/151\/revisions\/2380"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/media\/2193"}],"wp:attachment":[{"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/media?parent=151"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/categories?post=151"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.connectingrodrepair.com\/blog\/wp-json\/wp\/v2\/tags?post=151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}