{"id":7961,"date":"2026-07-22T13:31:57","date_gmt":"2026-07-22T18:31:57","guid":{"rendered":"https:\/\/blog.misumiusa.com\/?p=7961"},"modified":"2026-07-23T11:57:21","modified_gmt":"2026-07-23T16:57:21","slug":"white-paper-rdlc-locating-pins-comparison-study","status":"publish","type":"post","link":"https:\/\/blog.misumiusa.com\/white-paper-rdlc-locating-pins-comparison-study\/","title":{"rendered":"Rainbow Diamond-Like Carbon (R-DLC) locating pins comparison study"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<meta charset=\"UTF-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n\n<!-- SEO \/ AIO Meta -->\n<title>Rainbow-DLC Locating Pins: Hardness, Friction &amp; Wear Rate Comparison Study | MISUMI<\/title>\n<meta name=\"description\" content=\"MISUMI's R-DLC coating comparison study tests Rainbow Diamond-like Carbon against M2 steel, 52100 steel, and 6061-T6 aluminum locating pins\u2014covering hardness, indentation modulus, coefficient of friction, and wear rate.\">\n<meta name=\"keywords\" content=\"R-DLC locating pins, Rainbow Diamond-like Carbon, DLC coating comparison, locating pin wear resistance, M2 high-speed steel, 52100 steel, 6061-T6 aluminum, MISUMI locating pins, DLC coating hardness, coefficient of friction locating pins\">\n<link rel=\"canonical\" href=\"https:\/\/us.misumi-ec.com\/blog\/rainbow-diamond-like-carbon-r-dlc-locating-pins-comparison-study\/\">\n\n<!-- Open Graph -->\n<meta property=\"og:type\" content=\"article\">\n<meta property=\"og:title\" content=\"Rainbow-DLC Locating Pins: Hardness, Friction &amp; Wear Rate Comparison Study | MISUMI\">\n<meta property=\"og:description\" content=\"MISUMI tested R-DLC coating on locating pins against M2 steel, 52100 steel, and 6061-T6 aluminum. Download the full whitepaper for hardness, friction, and wear rate results.\">\n<meta property=\"og:url\" content=\"https:\/\/us.misumi-ec.com\/blog\/rainbow-diamond-like-carbon-r-dlc-locating-pins-comparison-study\/\">\n<meta property=\"og:site_name\" content=\"MISUMI Mech Lab Blog\">\n<meta property=\"article:published_time\" content=\"2020-01-30\">\n<meta property=\"article:modified_time\" content=\"2026-07-22\">\n<meta property=\"article:section\" content=\"Mechanical Design\">\n<meta property=\"article:tag\" content=\"R-DLC, DLC coating, locating pins, wear resistance, hardness, coefficient of friction\">\n\n<!-- Twitter Card -->\n<meta name=\"twitter:card\" content=\"summary_large_image\">\n<meta name=\"twitter:title\" content=\"Rainbow-DLC Locating Pins: Hardness, Friction &amp; Wear Rate Comparison Study | MISUMI\">\n<meta name=\"twitter:description\" content=\"MISUMI tested R-DLC coating against M2 steel, 52100 steel, and 6061-T6 aluminum locating pins. Download the full whitepaper.\">\n\n<!-- Structured Data: Article -->\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"ScholarlyArticle\",\n  \"headline\": \"Rainbow-DLC (R-DLC) Locating Pins Comparison Study\",\n  \"description\": \"MISUMI's comparative study of Rainbow Diamond-like Carbon (R-DLC) coating on locating pins, testing hardness (HIT), indentation modulus (EIT), coefficient of friction, and wear rate against M2 high-speed steel, 52100 steel, and 6061-T6 aluminum.\",\n  \"datePublished\": \"2020-01-30\",\n  \"dateModified\": \"2026-07-22\",\n  \"author\": {\n    \"@type\": \"Person\",\n    \"name\": \"Carlicia Layosa\",\n    \"url\": \"https:\/\/us.misumi-ec.com\/blog\/author\/clayosa\/\"\n  },\n  \"publisher\": {\n    \"@type\": \"Organization\",\n    \"name\": \"MISUMI\",\n    \"url\": \"https:\/\/us.misumi-ec.com\"\n  },\n  \"mainEntityOfPage\": {\n    \"@type\": \"WebPage\",\n    \"@id\": \"https:\/\/us.misumi-ec.com\/blog\/rainbow-diamond-like-carbon-r-dlc-locating-pins-comparison-study\/\"\n  },\n  \"about\": [\n    { \"@type\": \"Thing\", \"name\": \"Diamond-like carbon coating\" },\n    { \"@type\": \"Thing\", \"name\": \"Locating pins\" },\n    { \"@type\": \"Thing\", \"name\": \"Wear resistance\" },\n    { \"@type\": \"Thing\", \"name\": \"Surface hardness\" }\n  ]\n}\n<\/script>\n\n<!-- Structured Data: FAQPage for AIO eligibility -->\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is Rainbow Diamond-like Carbon (R-DLC) coating?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Rainbow Diamond-like Carbon (R-DLC) is a specialized variant of DLC coating applied to locating pins. DLC is a class of amorphous carbon material that exhibits properties similar to diamond\u2014high hardness, low friction, and excellent wear resistance. R-DLC is applied as a thin surface coating to extend the service life of locating pins used in fixture and assembly applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What materials were tested in the MISUMI R-DLC comparison study?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"MISUMI tested four material and coating types: M2 high-speed steel (tungsten-molybdenum alloy), 52100 low alloy steel, 6061-T6 aluminum, and R-DLC coated pins. The study compared hardness (HIT), indentation modulus (EIT), coefficient of friction, and wear rate across these materials.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is M2 high-speed steel used for in locating pins?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"M2 high-speed steel is a tungsten-molybdenum alloy belonging to the Fe\u2013C\u2013X multi-component system. It is the most widely used high-speed steel globally, having replaced T1 in most applications due to superior properties and economy. Its balanced composition makes it suitable for a wide range of locating pin applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why is wear-resistant coating important for locating pins?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Locating pins in fixture applications often experience surface-to-surface contact between steel pins and aluminum or steel workpieces. This friction causes gradual surface wear, reducing pin precision and increasing replacement frequency. Wear-resistant coatings like R-DLC extend service life, maintain dimensional accuracy, and reduce machine downtime.\"\n      }\n    }\n  ]\n}\n<\/script>\n\n<style>\n  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }\n\n  body {\n    font-size: 17px;\n    line-height: 1.75;\n    color: #1a1a18;\n    background: #ffffff;\n    padding: 2.5rem 1.5rem 4rem;\n  }\n\n  .byline {\n    display: flex;\n    align-items: center;\n    gap: 10px;\n    font-size: 13px;\n    color: #666;\n    margin-bottom: 2rem;\n    flex-wrap: wrap;\n  }\n  .byline-dot { color: #ccc; }\n\n  h1 {\n    font-size: clamp(1.6rem, 4vw, 2.2rem);\n    font-weight: 700;\n    line-height: 1.25;\n    letter-spacing: -0.02em;\n    color: #0d0d0b;\n    margin-bottom: 0.75rem;\n  }\n\n  .intro {\n    font-size: 1.05rem;\n    color: #444;\n    margin-bottom: 2rem;\n    border-left: 3px solid #FFD700;\n    padding-left: 1rem;\n  }\n\n  \/* \u2500\u2500 Download CTA hero \u2500\u2500 *\/\n  .download-hero {\n    background: #fffce6;\n    border: 1px solid #FFD700;\n    border-radius: 8px;\n    padding: 1.5rem 2rem;\n    margin: 1.5rem 0 2.5rem;\n    display: flex;\n    align-items: center;\n    justify-content: space-between;\n    gap: 1.5rem;\n    flex-wrap: wrap;\n  }\n  .download-hero-text {\n    font-size: 15px;\n    font-weight: 600;\n    color: #3a3000;\n  }\n  .download-hero-sub {\n    font-size: 13px;\n    color: #7a6000;\n    margin-top: 3px;\n    font-weight: 400;\n  }\n\n  \/* \u2500\u2500 Section headings \u2500\u2500 *\/\n  h2 {\n    font-size: 1.2rem;\n    font-weight: 700;\n    color: #0d0d0b;\n    margin: 2.5rem 0 0.75rem;\n    padding-bottom: 0.4rem;\n    border-bottom: 2px solid #FFD700;\n    display: inline-block;\n  }\n\n  h2.section-head {\n    font-size: 0.75rem;\n    text-transform: uppercase;\n    letter-spacing: 0.1em;\n    font-weight: 700;\n    color: #aaa;\n    margin: 3rem 0 1.5rem;\n    border-bottom: none;\n    display: block;\n    padding-bottom: 0;\n  }\n\n  h3 {\n    font-size: 1rem;\n    font-weight: 700;\n    color: #1a1a18;\n    margin: 1.5rem 0 0.5rem;\n  }\n\n  p { margin-bottom: 1rem; 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}\n\n  .callout-note {\n    background: #f0f5ff;\n    border-color: #b8cff5;\n    border-left-color: #1a56a0;\n    color: #1a2c4a;\n  }\n  .callout-note strong { color: #1a56a0; }\n\n  \/* \u2500\u2500 CTA strips \u2500\u2500 *\/\n  .cta-strip {\n    display: flex;\n    align-items: center;\n    gap: 0.75rem;\n    flex-wrap: wrap;\n    margin: 1.25rem 0;\n  }\n  .cta-btn {\n    display: inline-block;\n    background: #FFD700;\n    color: #1a1a18;\n    font-size: 13px;\n    font-weight: 700;\n    padding: 10px 20px;\n    border-radius: 4px;\n    text-decoration: none;\n    letter-spacing: 0.01em;\n    transition: background 0.15s;\n    white-space: nowrap;\n  }\n  .cta-btn:hover { background: #e6c200; }\n  .cta-btn-outline {\n    background: transparent;\n    color: #1a56a0;\n    border: 1px solid #1a56a0;\n  }\n  .cta-btn-outline:hover { background: #f0f5ff; }\n\n  \/* \u2500\u2500 Spec table \u2500\u2500 *\/\n  .spec-table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 14px;\n    margin: 1rem 0 1.5rem;\n  }\n  .spec-table th {\n    background: #f2f0eb;\n    font-weight: 600;\n    text-align: left;\n    padding: 8px 12px;\n    border-bottom: 2px solid #FFD700;\n    color: #333;\n  }\n  .spec-table td {\n    padding: 8px 12px;\n    border-bottom: 1px solid #eee;\n    vertical-align: top;\n  }\n  .spec-table tr:last-child td { border-bottom: none; }\n\n  \/* \u2500\u2500 Footer \u2500\u2500 *\/\n  .post-footer {\n    margin-top: 4rem;\n    padding-top: 2rem;\n    border-top: 2px solid #1a1a18;\n  }\n  .post-footer-title {\n    font-size: 12px;\n    text-transform: uppercase;\n    letter-spacing: 0.08em;\n    font-weight: 700;\n    color: #888;\n    margin-bottom: 0.5rem;\n  }\n  .post-footer-note {\n    font-size: 14px;\n    color: #555;\n    line-height: 1.6;\n  }\n  .tag-list {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 6px;\n    margin-top: 1rem;\n  }\n  .tag {\n    font-size: 12px;\n    background: #f2f0eb;\n    color: #555;\n    padding: 3px 10px;\n    border-radius: 100px;\n    border: 1px solid #e0dcd4;\n  }\n\n  a { color: #1a56a0; }\n  a:hover { color: #0e3870; }\n<\/style>\n\n<p class=\"intro\">\n  Surface wear is one of the primary causes of locating pin replacement in fixture and assembly applications. MISUMI&#8217;s R-DLC whitepaper tests Rainbow Diamond-like Carbon coating head-to-head against three common pin materials\u2014measuring hardness, indentation modulus, coefficient of friction, and wear rate under controlled conditions.\n<\/p>\n\n<div class=\"download-hero\">\n  <div>\n    <div class=\"download-hero-text\">Full whitepaper available for download<\/div>\n    <div class=\"download-hero-sub\">Includes raw test data, statistical analysis, and methodology for all four material types<\/div>\n  <\/div>\n  <a class=\"cta-btn\" href=\"https:\/\/us.misumi-ec.com\/blog\/wp-content\/uploads\/2020\/03\/White-Paper-MISUMI-R-DLC-Comparison-Study-V.2.pdf\" target=\"_blank\" rel=\"noopener\">Download whitepaper (PDF)<\/a>\n<\/div>\n\n<h2>Introduction<\/h2>\n\n<p>Material surfaces wear over time\u2014particularly in fixture applications where there is repeated surface-to-surface contact between a steel locating pin and an aluminum or steel workpiece. This progressive wear degrades pin precision, increases replacement frequency, and adds to machine downtime.<\/p>\n\n<p>Wear-resistant coatings are a practical solution. By applying a hard, low-friction surface layer to a locating pin, engineers can extend service life significantly without changing the underlying pin geometry or material. R-DLC is one such coating: a variant of Diamond-like Carbon engineered specifically for this class of application.<\/p>\n\n<h2>What is Diamond-like Carbon (DLC)?<\/h2>\n\n<p>Diamond-like Carbon (DLC) is a class of amorphous carbon material that exhibits properties characteristic of diamond\u2014high hardness, chemical inertness, and a low coefficient of friction. Unlike crystalline diamond, DLC can be deposited as a thin coating onto metal components at relatively low temperatures, making it practical for precision machined parts like locating pins.<\/p>\n\n<p>R-DLC (Rainbow Diamond-like Carbon) is a unique variant. The &#8220;rainbow&#8221; designation refers to its visible iridescent surface appearance, which results from the coating&#8217;s optical properties\u2014a consequence of its specific amorphous carbon structure.<\/p>\n\n<p>Key features of R-DLC coating:<\/p>\n\n<ul style=\"list-style:none; padding:0; margin:1rem 0; display:flex; flex-direction:column; gap:0.6rem;\">\n  <li style=\"display:flex; align-items:flex-start; gap:10px; font-size:15px; color:#2a2a27; line-height:1.55;\">\n    <span style=\"background:#FFD700; color:#1a1a18; font-size:10px; font-weight:800; border-radius:3px; padding:2px 6px; margin-top:4px; flex-shrink:0;\">\u2605<\/span>\n    <div><strong>Extreme hardness.<\/strong> 6,000\u20137,000 HV provides superior surface durability against repeated workpiece contact<\/div>\n  <\/li>\n  <li style=\"display:flex; align-items:flex-start; gap:10px; font-size:15px; color:#2a2a27; line-height:1.55;\">\n    <span style=\"background:#FFD700; color:#1a1a18; font-size:10px; font-weight:800; border-radius:3px; padding:2px 6px; margin-top:4px; flex-shrink:0;\">\u2605<\/span>\n    <div><strong>High abrasion resistance.<\/strong> Minimizes wear in demanding, high-cycle fixture applications<\/div>\n  <\/li>\n  <li style=\"display:flex; align-items:flex-start; gap:10px; font-size:15px; color:#2a2a27; line-height:1.55;\">\n    <span style=\"background:#FFD700; color:#1a1a18; font-size:10px; font-weight:800; border-radius:3px; padding:2px 6px; margin-top:4px; flex-shrink:0;\">\u2605<\/span>\n    <div><strong>Prevention of cold welding in aluminum components.<\/strong> Prevents galling and material build-up, prolonging the service life of both the pin and the workpiece<\/div>\n  <\/li>\n  <li style=\"display:flex; align-items:flex-start; gap:10px; font-size:15px; color:#2a2a27; line-height:1.55;\">\n    <span style=\"background:#FFD700; color:#1a1a18; font-size:10px; font-weight:800; border-radius:3px; padding:2px 6px; margin-top:4px; flex-shrink:0;\">\u2605<\/span>\n    <div><strong>Low coefficient of friction.<\/strong> 0.15\u20130.2 against steel (dry) for smooth, repeatable pin insertion and removal<\/div>\n  <\/li>\n  <li style=\"display:flex; align-items:flex-start; gap:10px; font-size:15px; color:#2a2a27; line-height:1.55;\">\n    <span style=\"background:#FFD700; color:#1a1a18; font-size:10px; font-weight:800; border-radius:3px; padding:2px 6px; margin-top:4px; flex-shrink:0;\">\u2605<\/span>\n    <div><strong>Chemical resistance.<\/strong> Withstands exposure to aggressive substances in the manufacturing environment<\/div>\n  <\/li>\n  <li style=\"display:flex; align-items:flex-start; gap:10px; font-size:15px; color:#2a2a27; line-height:1.55;\">\n    <span style=\"background:#FFD700; color:#1a1a18; font-size:10px; font-weight:800; border-radius:3px; padding:2px 6px; margin-top:4px; flex-shrink:0;\">\u2605<\/span>\n    <div><strong>Extremely high thermal conductivity.<\/strong> Approximately 5\u00d7 higher than copper, helping dissipate heat at the contact interface<\/div>\n  <\/li>\n  <li style=\"display:flex; align-items:flex-start; gap:10px; font-size:15px; color:#2a2a27; line-height:1.55;\">\n    <span style=\"background:#FFD700; color:#1a1a18; font-size:10px; font-weight:800; border-radius:3px; padding:2px 6px; margin-top:4px; flex-shrink:0;\">\u2605<\/span>\n    <div><strong>Biocompatibility.<\/strong> Coating causes no harm or adverse effects, making RDLC pins suitable for medical device fixture applications<\/div>\n  <\/li>\n<\/ul>\n\n<h2>Materials tested<\/h2>\n\n<p>The study compares four material types across all tests. Understanding the baseline properties of each material helps contextualize the R-DLC coating&#8217;s performance advantage.<\/p>\n\n<div class=\"material-grid\">\n  <div class=\"material-card\">\n    <div class=\"material-card-abbr\">M2<\/div>\n    <div class=\"material-card-name\">M2 High-Speed Steel<\/div>\n    <div class=\"material-card-desc\">Tungsten-molybdenum high-speed steel. The world&#8217;s most widely used HSS grade, having replaced T1 in most applications. Belongs to the Fe\u2013C\u2013X alloy system (X = Cr, W, Mo, V, or Co). Well-balanced composition for general-purpose use.<\/div>\n  <\/div>\n  <div class=\"material-card\">\n    <div class=\"material-card-abbr\">52100<\/div>\n    <div class=\"material-card-name\">52100 Steel<\/div>\n    <div class=\"material-card-desc\">Low alloy steel with high carbon and chromium content. Contains C, Cr, Fe, Mn, Si, P, and S. Corrosion-resistant with excellent hardenability and good machinability. Widely used for steel bearings.<\/div>\n  <\/div>\n  <div class=\"material-card\">\n    <div class=\"material-card-abbr\">6061-T6<\/div>\n    <div class=\"material-card-name\">6061-T6 Aluminum<\/div>\n    <div class=\"material-card-desc\">6061 aluminum in the T6 temper\u2014solution heat-treated then artificially aged to meet standard mechanical property requirements. One of the most common aluminum alloys for general-purpose structural use.<\/div>\n  <\/div>\n  <div class=\"material-card\">\n    <div class=\"material-card-abbr\">R-DLC<\/div>\n    <div class=\"material-card-name\">Rainbow DLC Coating<\/div>\n    <div class=\"material-card-desc\">Unique amorphous carbon coating applied over a base pin material. Tested here to quantify its hardness, modulus, friction, and wear performance relative to the uncoated materials above.<\/div>\n  <\/div>\n<\/div>\n\n<div class=\"callout callout-note\">\n  <strong>Why aluminum?<\/strong> 6061-T6 is included because many real-world fixture applications involve steel locating pins engaging aluminum workpieces. Testing aluminum as a baseline establishes how much improvement R-DLC delivers in that specific contact scenario.\n<\/div>\n\n<h2>Tests performed<\/h2>\n\n<p>The whitepaper covers three primary test categories, each with associated statistical analysis:<\/p>\n\n<ul class=\"test-list\">\n  <li>\n    <span class=\"test-num\">01<\/span>\n    <div><strong>Hardness (HIT) and Indentation Modulus (EIT)<\/strong>\u2014measures surface resistance to permanent deformation and the elastic stiffness of the coating under an indentation load. Higher HIT indicates a harder surface; higher EIT reflects greater stiffness.<\/div>\n  <\/li>\n  <li>\n    <span class=\"test-num\">02<\/span>\n    <div><strong>Coefficient of Friction and Wear Rate<\/strong>\u2014quantifies how much resistance the surface generates under sliding contact, and how quickly material is lost over repeated cycles. Both directly predict service life in fixture applications.<\/div>\n  <\/li>\n  <li>\n    <span class=\"test-num\">03<\/span>\n    <div><strong>Statistical Tests for Each<\/strong>\u2014each measurement set is analyzed statistically to confirm that observed differences between materials are significant rather than artifacts of test variation.<\/div>\n  <\/li>\n<\/ul>\n\n<table class=\"spec-table\" aria-label=\"Summary of test parameters\">\n  <thead>\n    <tr>\n      <th>Test<\/th>\n      <th>Metric<\/th>\n      <th>Relevance to locating pins<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>Hardness<\/td>\n      <td>HIT (Indentation Hardness)<\/td>\n      <td>Determines resistance to surface denting and deformation from workpiece contact<\/td>\n    <\/tr>\n    <tr>\n      <td>Elastic modulus<\/td>\n      <td>EIT (Indentation Modulus)<\/td>\n      <td>Indicates how much the coating deforms elastically\u2014affects contact stress distribution<\/td>\n    <\/tr>\n    <tr>\n      <td>Friction<\/td>\n      <td>Coefficient of Friction (CoF)<\/td>\n      <td>Lower CoF reduces galling and heat generation during pin insertion and removal<\/td>\n    <\/tr>\n    <tr>\n      <td>Wear<\/td>\n      <td>Wear Rate<\/td>\n      <td>Directly predicts replacement interval and total cost of ownership for the pin<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>Download the full whitepaper<\/h2>\n\n<p>The complete study includes all raw test data, methodology, equipment specifications, and statistical test results for each material pair. It is intended for engineers evaluating locating pin material selection for fixture, welding, or assembly applications.<\/p>\n\n<div class=\"cta-strip\">\n  <a class=\"cta-btn\" href=\"https:\/\/us.misumi-ec.com\/blog\/wp-content\/uploads\/2020\/03\/White-Paper-MISUMI-R-DLC-Comparison-Study-V.2.pdf\" target=\"_blank\" rel=\"noopener\">Download: R-DLC Comparison Study (PDF)<\/a>\n  <a class=\"cta-btn cta-btn-outline\" href=\"https:\/\/us.misumi-ec.com\/vona2\/mech\/M0100000000\/M0300000000\/M0301000000\/\" target=\"_blank\" rel=\"noopener\">Shop MISUMI locating pins<\/a>\n<\/div>\n\n<div class=\"post-footer\">\n  <p class=\"post-footer-title\">Related resources<\/p>\n  <p class=\"post-footer-note\">For questions about R-DLC coating availability, compatible pin series, or material selection for your application, contact the MISUMI engineering team or leave a comment below.<\/p>\n  <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Rainbow-DLC Locating Pins: Hardness, Friction &amp; Wear Rate Comparison Study | MISUMI Surface wear is one of the primary causes of locating pin replacement in fixture and assembly applications. 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