{"id":5174,"date":"2025-07-31T13:07:49","date_gmt":"2025-07-31T11:07:49","guid":{"rendered":"https:\/\/www.traxx-group.com\/en\/?p=5174"},"modified":"2025-07-24T13:56:24","modified_gmt":"2025-07-24T11:56:24","slug":"how-to-measure-bolt-tightness","status":"publish","type":"post","link":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/","title":{"rendered":"How to measure bolt tightness?"},"content":{"rendered":"\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"What\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Wondering how to measure bolt tightness<\/strong>? The most precise and industry-ready method available today is ultrasonic measurement using the TRAXX-M2 bolt tension meter. But let\u2019s break down all the options\u2014and explain why TRAXX outperforms them all.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

\u2699\ufe0f How to measure bolt tightness? <\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

It sounds simple\u2014but the reality is more complex than you’d think.<\/p>

How to measure bolt tightness<\/strong> is a critical question for ensuring the safety and reliability of any bolted joint.<\/p>

In this article, we explore the main methods used to check bolt tightness<\/a>, from torque checks to ultrasonic measurements.<\/p>

Each method has its strengths, limitations, and ideal use cases.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t

How do you measure bolt tightening?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

In this article, we\u2019ll explore how to measure bolt tightness<\/strong> using both traditional and advanced methods. You\u2019ll learn the differences between torque-angle methods, strain gauges, and tension-based techniques\u2014and why some are more precise but also more demanding to implement.<\/p>

Whether you’re in maintenance, assembly, or quality control, this guide will help you choose the right method for your application<\/a>.<\/p>

\ud83d\udd27 Because preventing bolt failure is always better than fixing it later.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Torque Check (Breakaway or Re-Torque Method)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

This involves applying torque in the loosening direction to estimate the residual tightening.<\/p>

Limitations:<\/strong><\/p>

  • Highly affected by lubrication, temperature, and surface conditions<\/p><\/li>

  • Can’t distinguish between thread friction and clamp force<\/p><\/li>

  • Gives inconsistent results<\/p><\/li>

  • Not suitable for quality control in critical assemblies<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

    \n\t\t\t\t\t\t
    \n\t\t\t\t\t
    \n\t\t\t
    \n\t\t\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"What\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
    \n\t\t\t\t\t\t
    \n\t\t\t\t\t
    \n\t\t\t
    \n\t\t\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t

    Crack-On \/ Crack-Off Methods<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    These techniques involve applying torque in either direction until movement is detected\u2014used to check if torque has dropped or increased.<\/p>

    • Crack-on<\/strong>: Apply torque in the tightening direction until a small movement occurs.<\/p><\/li>

    • Crack-off<\/strong>: Apply torque in the loosening direction and note the torque when the joint begins to move.<\/p><\/li><\/ul>

      Limitations:<\/strong><\/p>

      • Measures static breakaway torque, which is usually higher than the applied torque due to thread friction<\/p><\/li>

      • Entirely torque-based, not measuring actual tension<\/p><\/li>

      • Introduces risk of disturbing the joint and affecting preload<\/p><\/li>

      • Results vary with time and surface condition\u2014friction changes can cause \u00b120% variation after just 48 hours<\/p><\/li>

      • Difficult to repeat reliably in production<\/p><\/li><\/ul>

        These are often seen as \u201cquick checks\u201d but offer no serious data about clamping force\u2014only assumptions.<\/p>

        Many engineers still wonder how to measure bolt tightness<\/strong> accurately without relying on torque alone.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

        \n\t\t\t\t\t\t
        \n\t\t\t\t\t
        \n\t\t\t
        \n\t\t\t\t\t\t
        \n\t\t\t\t
        \n\t\t\t\t\t

        Marked Bolt Method<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
        \n\t\t\t\t
        \n\t\t\t\t\t\t\t\t\t

        Often considered the most accurate torque-based method, this involves:<\/p>

        • Marking the nut or socket and the stationary surface<\/p><\/li>

        • Loosening the bolt by about 30\u00b0<\/p><\/li>

        • Re-tightening until the marks realign<\/p><\/li>

        • Reading the torque applied during the return to position<\/p><\/li><\/ul>

          Limitations:<\/strong><\/p>

          • While more precise than crack-on\/crack-off, it still doesn’t measure real bolt tension<\/p><\/li>

          • Does not account for creep or loss of preload due to joint deformation<\/p><\/li>

          • Susceptible to errors if joint condition changes or if retightening is done too late<\/p><\/li><\/ul>

            Even though it offers better reproducibility, it remains an indirect method and does not replace direct measurement.
            So, have we answered the question How to measure bolt tightness?<\/em><\/p>


            Not quite yet\u2014be patient.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

            \n\t\t\t\t\t\t
            \n\t\t\t\t\t
            \n\t\t\t
            \n\t\t\t\t\t\t
            \n\t\t\t\t
            \n\t\t\t\t\t

            Load Cells<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
            \n\t\t\t\t\t\t
            \n\t\t\t\t\t
            \n\t\t\t
            \n\t\t\t\t\t\t
            \n\t\t\t\t
            \n\t\t\t\t\t\t\t\t\t

            These are physical sensors placed beneath the nut or bolt head to directly measure compression.<\/p>

            Limitations:<\/strong><\/p>

            • Requires custom setups, often interfering with normal joint geometry<\/p><\/li>

            • Adds significant cost per application<\/p><\/li>

            • Impossible to use in most real-world environments<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

              \n\t\t\t\t
              \n\t\t\t\t\t

              Strain Gauges<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
              \n\t\t\t\t
              \n\t\t\t\t\t\t\t\t\t

              Bonded to the bolt shaft, strain gauges track minute changes in deformation.<\/p>

              Limitations:<\/strong><\/p>

              • Requires bolt modification and delicate installation<\/p><\/li>

              • Very sensitive to environmental conditions<\/p><\/li>

              • Can drift over time or be damaged during installation<\/p><\/li>

              • Requires expert interpretation<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                \n\t\t\t\t
                \n\t\t\t\t\t

                Micrometer Measurement<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                \n\t\t\t\t
                \n\t\t\t\t\t\t\t\t\t

                This method measures the physical elongation of a bolt with a micrometer or dial gauge.<\/p>

                Limitations:<\/strong><\/p>

                • Requires access to both ends of the bolt\u2014impractical in most assemblies<\/p><\/li>

                • Sensitive to temperature and human error<\/p><\/li>

                • Requires reference surfaces machined on the bolt shaft<\/p><\/li>

                • Provides only a crude estimate unless performed under laboratory conditions<\/p><\/li><\/ul>

                  While it can theoretically show elongation, it’s not usable in field conditions or for quality control in production.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                  \n\t\t\t\t
                  \n\t\t\t\t\t

                  Ultrasonic Measurement with TRAXX-M2 (\u2705 Recommended)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                  \n\t\t\t\t
                  \n\t\t\t\t\t\t\t\t\t

                  TRAXX-M2 emits an ultrasonic pulse along the bolt and tracks the time it takes for the signal to bounce back. As the bolt stretches under load, the travel time changes. It is the best way to measure bolt tightness.<\/p>

                  Why it\u2019s better:<\/strong><\/p>

                  • Non-destructive and doesn\u2019t require modifying the bolt<\/p><\/li>

                  • Works in real assemblies, on-site or in production<\/p><\/li>

                  • Accurate to within 1 part per million<\/p><\/li>

                  • Directly measures clamping force<\/strong>, not torque<\/p><\/li><\/ul>

                    It fully answers both:<\/p>

                    • How do you measure bolt clamping force?<\/strong><\/p><\/li>

                    • How do you measure bolt tightening?<\/strong><\/p><\/li><\/ul>

                      No other method combines this level of precision, speed, and repeatability to measure bolt tightness.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                      \n\t\t\t\t
                      \n\t\t\t\t\t

                      How to know if bolts are tight enough?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                      \n\t\t\t\t
                      \n\t\t\t\t\t\t\t\t\t

                      A bolt is considered properly tensioned when the clamping force it applies falls within the preload range defined by the design engineer for that specific joint.<\/p>

                      With TRAXX-M2:<\/strong><\/p>

                      1.Using ultrasonic technology, the TRAXX-M2 precisely measures the change in Time of Flight (ToF) of the ultrasonic wave as it travels through the bolt. This allows the device to calculate the actual elongation\u2014and therefore the real tension\u2014of the bolt.<\/p>

                      2.You simply define your target preload range (for example, between 130 and 145 kN), and the TRAXX-M2 instantly tells you whether the bolt is in the safe zone.<\/p>

                      3.A green light on the screen confirms you\u2019ve reached the right value.<\/p>

                      In short:<\/strong><\/p>

                      You’re not estimating with torque\u2014you\u2019re verifying with science.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                      \n\t\t\t\t
                      \n\t\t\t\t\t

                      How to determine bolt stiffness?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                      \n\t\t\t\t
                      \n\t\t\t\t\t\t\t\t\t

                      From the manufacturer<\/strong>, you’ll usually receive:<\/p>

                      • Elastic modulus (Young\u2019s modulus)<\/p><\/li>

                      • Thread pitch and diameter<\/p><\/li>

                      • Yield strength and proof load<\/p><\/li><\/ul>

                        These give you theoretical axial stiffness<\/strong>.<\/p>

                        At TRAXX<\/strong>, we define and measure a bolt\u2019s ultrasonic stiffness<\/strong>\u2014how sound waves behave through the bolt under load.<\/p>

                        How we determine it:<\/strong><\/p>

                        • Perform a bolt calibration using a tensile test bench<\/p><\/li>

                        • Apply load incrementally and record the ultrasonic time-of-flight variation<\/p><\/li>

                        • Build a calibration curve unique to the bolt<\/p><\/li><\/ul>

                          Ultrasonic stiffness<\/strong> is influenced by:<\/p>

                          1. Bolt length<\/p><\/li>

                          2. Diameter<\/p><\/li>

                          3. Base material<\/p><\/li>

                          4. Heat treatment history<\/p><\/li>

                          5. Thickness of the clamped joint<\/p><\/li><\/ol>

                            This process ensures TRAXX delivers tension readings with industrial precision.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                            \n\t\t\t\t
                            \n\t\t\t\t\t

                            How to check if a bolt is over torqued?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                            \n\t\t\t\t
                            \n\t\t\t\t\t\t\t\t\t

                            Torque doesn\u2019t always equal tension\u2014and over-torquing can stretch a bolt past its elastic limit.<\/p>

                            TRAXX-M2 instantly detects this by:<\/p>

                            • Measuring the ultrasonic signal delay<\/p><\/li>

                            • Comparing the tension to the safe working load<\/p><\/li><\/ul>

                              You\u2019ll know immediately if a bolt has been overstressed, even if no visible damage is present.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                              \n\t\t\t\t
                              \n\t\t\t\t\t

                              Which tool is used to check the tightness of bolts and nuts<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                              \n\t\t\t\t
                              \n\t\t\t\t\t\t\t\t\t

                              Let\u2019s examine the usual suspects:<\/p>

                              • Torque wrenches?<\/strong> Affected by friction\u2014indirect and inaccurate<\/p><\/li>

                              • Angle-controlled tools?<\/strong> Depends on thread tolerances\u2014not reliable for clamping force<\/p><\/li>

                              • Strain gauges?<\/strong> Require invasive setup and constant calibration<\/p><\/li>

                              • Load cells?<\/strong> Bulky, expensive, and not scalable<\/p><\/li>

                              • Micrometers?<\/strong> Require full access to both ends\u2014impractical and error-prone<\/p><\/li>

                              • Crack-on\/off methods?<\/strong> Guesswork disguised as measurement<\/p><\/li>

                              • Marked bolt method?<\/strong> Better, but still indirect and friction-dependent<\/p><\/li><\/ul>

                                \u2705 Only TRAXX-M2<\/strong>, with ultrasonic measurement, gives a reliable, portable, and repeatable solution. The TRAXX-M2 provides a precise answer to the question how to measure bolt tightness<\/strong> by using ultrasonic elongation measurement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                                \n\t\t\t\t
                                \n\t\t\t\t\t

                                What is the best method of bolt checking?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                \n\t\t\t\t
                                \n\t\t\t\t\t\t\t\t\t

                                There\u2019s a reason industry leaders trust TRAXX-M2.<\/p>

                                \u2705 Stellantis<\/strong> uses it to calibrate torque-angle tools \u2705 Institut de Soudure<\/strong> uses it to study bolt relaxation under dynamic loads \u2705 Gas turbine OEMs<\/strong> use it for high-load bolts \u2705 Aerospace companies<\/strong> rely on it for absolute safety margins.<\/p>

                                Whatever your industry, the conclusion is simple:<\/p>

                                • To control bolted joints, you must control tension<\/strong><\/p><\/li>

                                • To control tension, you need TRAXX-M2<\/strong><\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                                  \n\t\t\t\t
                                  \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

                                  Ensuring that a bolt is properly tightened is essential to structural safety, machine reliability, and long-term performance. Yet, the question \u00ab\u00a0How to measure bolt tightness?\u00a0\u00bb doesn’t have a simple answer\u2014unless you’re using the right tool.<\/p>\n","protected":false},"author":2,"featured_media":5175,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-5174","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nHow to measure bolt tightness ? - TRAXX<\/title>\n<meta name=\"description\" content=\"This guide explores how to measure bolt tightness and explains why ultrasonic bolt tension measurement is the gold standard.\" \/>\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.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to measure bolt tightness ? - TRAXX\" \/>\n<meta property=\"og:description\" content=\"This guide explores how to measure bolt tightness and explains why ultrasonic bolt tension measurement is the gold standard.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/\" \/>\n<meta property=\"og:site_name\" content=\"TRAXX GROUP\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-31T11:07:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.traxx-group.com\/en\/wp-content\/uploads\/2025\/07\/measure-bolt-tightness.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"2560\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Jacques zwickert Jacques Z\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jacques zwickert Jacques Z\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/\"},\"author\":{\"name\":\"Jacques zwickert Jacques Z\",\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/#\\\/schema\\\/person\\\/07d1ca5b23ac4c31eef24a574b6e23d2\"},\"headline\":\"How to measure bolt tightness?\",\"datePublished\":\"2025-07-31T11:07:49+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/\"},\"wordCount\":1229,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/measure-bolt-tightness.jpg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/\",\"url\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/\",\"name\":\"How to measure bolt tightness ? - TRAXX\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/measure-bolt-tightness.jpg\",\"datePublished\":\"2025-07-31T11:07:49+00:00\",\"description\":\"This guide explores how to measure bolt tightness and explains why ultrasonic bolt tension measurement is the gold standard.\",\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/2025\\\/07\\\/31\\\/how-to-measure-bolt-tightness\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/measure-bolt-tightness.jpg\",\"contentUrl\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/measure-bolt-tightness.jpg\",\"width\":2560,\"height\":2560},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/\",\"name\":\"TRAXX GROUP\",\"description\":\"Master the tension of your bolted assemblies\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/#organization\",\"name\":\"TRAXX GROUP\",\"alternateName\":\"TRAXX GROUP\",\"url\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/wp-content\\\/uploads\\\/2023\\\/08\\\/cropped-LOGO_TEXTE_CADRE-BLANC_72ppp.jpg\",\"contentUrl\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/wp-content\\\/uploads\\\/2023\\\/08\\\/cropped-LOGO_TEXTE_CADRE-BLANC_72ppp.jpg\",\"width\":2194,\"height\":567,\"caption\":\"TRAXX GROUP\"},\"image\":{\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/#\\\/schema\\\/person\\\/07d1ca5b23ac4c31eef24a574b6e23d2\",\"name\":\"Jacques zwickert Jacques Z\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d3e40ff68937b5a7a124f9a3d9212e862ff4f64b46bb61b4b80b5ee114b6f71e?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d3e40ff68937b5a7a124f9a3d9212e862ff4f64b46bb61b4b80b5ee114b6f71e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/d3e40ff68937b5a7a124f9a3d9212e862ff4f64b46bb61b4b80b5ee114b6f71e?s=96&d=mm&r=g\",\"caption\":\"Jacques zwickert Jacques Z\"},\"url\":\"https:\\\/\\\/www.traxx-group.com\\\/en\\\/author\\\/jacques-zwickert-jacques-z\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"How to measure bolt tightness ? - TRAXX","description":"This guide explores how to measure bolt tightness and explains why ultrasonic bolt tension measurement is the gold standard.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/","og_locale":"fr_FR","og_type":"article","og_title":"How to measure bolt tightness ? - TRAXX","og_description":"This guide explores how to measure bolt tightness and explains why ultrasonic bolt tension measurement is the gold standard.","og_url":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/","og_site_name":"TRAXX GROUP","article_published_time":"2025-07-31T11:07:49+00:00","og_image":[{"width":2560,"height":2560,"url":"https:\/\/www.traxx-group.com\/en\/wp-content\/uploads\/2025\/07\/measure-bolt-tightness.jpg","type":"image\/jpeg"}],"author":"Jacques zwickert Jacques Z","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"Jacques zwickert Jacques Z","Dur\u00e9e de lecture estim\u00e9e":"8 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/#article","isPartOf":{"@id":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/"},"author":{"name":"Jacques zwickert Jacques Z","@id":"https:\/\/www.traxx-group.com\/en\/#\/schema\/person\/07d1ca5b23ac4c31eef24a574b6e23d2"},"headline":"How to measure bolt tightness?","datePublished":"2025-07-31T11:07:49+00:00","mainEntityOfPage":{"@id":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/"},"wordCount":1229,"commentCount":0,"publisher":{"@id":"https:\/\/www.traxx-group.com\/en\/#organization"},"image":{"@id":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/#primaryimage"},"thumbnailUrl":"https:\/\/www.traxx-group.com\/en\/wp-content\/uploads\/2025\/07\/measure-bolt-tightness.jpg","articleSection":["Blog"],"inLanguage":"fr-FR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/","url":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/","name":"How to measure bolt tightness ? - TRAXX","isPartOf":{"@id":"https:\/\/www.traxx-group.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/#primaryimage"},"image":{"@id":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/#primaryimage"},"thumbnailUrl":"https:\/\/www.traxx-group.com\/en\/wp-content\/uploads\/2025\/07\/measure-bolt-tightness.jpg","datePublished":"2025-07-31T11:07:49+00:00","description":"This guide explores how to measure bolt tightness and explains why ultrasonic bolt tension measurement is the gold standard.","inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.traxx-group.com\/en\/2025\/07\/31\/how-to-measure-bolt-tightness\/#primaryimage","url":"https:\/\/www.traxx-group.com\/en\/wp-content\/uploads\/2025\/07\/measure-bolt-tightness.jpg","contentUrl":"https:\/\/www.traxx-group.com\/en\/wp-content\/uploads\/2025\/07\/measure-bolt-tightness.jpg","width":2560,"height":2560},{"@type":"WebSite","@id":"https:\/\/www.traxx-group.com\/en\/#website","url":"https:\/\/www.traxx-group.com\/en\/","name":"TRAXX GROUP","description":"Master the tension of your bolted assemblies","publisher":{"@id":"https:\/\/www.traxx-group.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.traxx-group.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/www.traxx-group.com\/en\/#organization","name":"TRAXX GROUP","alternateName":"TRAXX GROUP","url":"https:\/\/www.traxx-group.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.traxx-group.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/www.traxx-group.com\/en\/wp-content\/uploads\/2023\/08\/cropped-LOGO_TEXTE_CADRE-BLANC_72ppp.jpg","contentUrl":"https:\/\/www.traxx-group.com\/en\/wp-content\/uploads\/2023\/08\/cropped-LOGO_TEXTE_CADRE-BLANC_72ppp.jpg","width":2194,"height":567,"caption":"TRAXX GROUP"},"image":{"@id":"https:\/\/www.traxx-group.com\/en\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.traxx-group.com\/en\/#\/schema\/person\/07d1ca5b23ac4c31eef24a574b6e23d2","name":"Jacques zwickert Jacques Z","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/secure.gravatar.com\/avatar\/d3e40ff68937b5a7a124f9a3d9212e862ff4f64b46bb61b4b80b5ee114b6f71e?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/d3e40ff68937b5a7a124f9a3d9212e862ff4f64b46bb61b4b80b5ee114b6f71e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d3e40ff68937b5a7a124f9a3d9212e862ff4f64b46bb61b4b80b5ee114b6f71e?s=96&d=mm&r=g","caption":"Jacques zwickert Jacques Z"},"url":"https:\/\/www.traxx-group.com\/en\/author\/jacques-zwickert-jacques-z\/"}]}},"_links":{"self":[{"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/posts\/5174","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/comments?post=5174"}],"version-history":[{"count":17,"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/posts\/5174\/revisions"}],"predecessor-version":[{"id":5195,"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/posts\/5174\/revisions\/5195"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/media\/5175"}],"wp:attachment":[{"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/media?parent=5174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/categories?post=5174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.traxx-group.com\/en\/wp-json\/wp\/v2\/tags?post=5174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}