{"id":4405,"date":"2025-04-10T10:30:47","date_gmt":"2025-04-10T01:30:47","guid":{"rendered":"https:\/\/ohtavn.com\/?post_type=media&p=4405"},"modified":"2025-06-17T13:13:57","modified_gmt":"2025-06-17T04:13:57","slug":"how-to-choose-screws-that-wont-fail-common-problems-and-countermeasures","status":"publish","type":"media","link":"https:\/\/ohtavn.com\/en\/media\/how-to-choose-screws-that-wont-fail-common-problems-and-countermeasures\/","title":{"rendered":"How to choose screws that won’t fail: Common problems and countermeasures"},"content":{"rendered":"
\n

Introduction<\/h3>\n<\/div>\n
\n

Screws play an active role in our daily lives, from assembling furniture to home appliances, automobiles, and buildings. However, despite their importance, choosing the wrong screw can lead to wobbly furniture, malfunctioning machinery, and in the worst case, serious accidents.<\/p>\n<\/div>\n

\n

This article comprehensively explains everything about screws, from how to choose them, common troubles and their countermeasures, to how to differentiate screw usage in DIY, furniture, and construction. By reading this article, readers will be able to avoid screw selection mistakes and lead a safe and comfortable life.<\/p>\n<\/div>\n

\n

Basics of Screws<\/h3>\n<\/div>\n
\n

Screws are used in various products around us, and their types and applications are diverse. To choose the appropriate screw, it is important to first understand the basic structure and characteristics of screws.<\/p>\n<\/div>\n

\n

\"[Image<\/p>\n<\/div>\n

\n

Names and Roles of Each Part of a Screw<\/h4>\n<\/div>\n
\n

A screw is mainly composed of three parts: the head, the shank, and the thread. The head is the part that is turned with a tool such as a screwdriver, the shank is the body part for fixing the material, and the thread is a spiral groove cut into the shank, which creates resistance when screwed into the material, playing the role of firmly fixing it.<\/p>\n<\/div>\n

\n

How to Indicate Screw Sizes<\/h4>\n<\/div>\n
\n

Screw sizes are indicated by their diameter (thickness of the shank), length, and pitch (coarseness of the thread). The diameter is expressed in millimeters (mm), and the length refers to the length of the shank excluding the head. Pitch represents the interval between threads, and there are two types: coarse pitch and fine pitch.<\/p>\n<\/div>\n

\n

Types and Characteristics of Screw Materials<\/h4>\n<\/div>\n
\n

The material of screws varies depending on the usage environment and application.<\/p>\n<\/div>\n

\n
    \n\u00a0\t<\/p>\n
  • Iron:<\/strong> High strength and widely used for general purposes.<\/li>\n

    \u00a0\t<\/p>\n

  • Stainless Steel:<\/strong> Rust-resistant and suitable for use around water or outdoors.<\/li>\n

    \u00a0\t<\/p>\n

  • Aluminum:<\/strong> Lightweight and easy to process, but inferior in strength to iron.<\/li>\n

    \u00a0\t<\/p>\n

  • Brass:<\/strong> Excellent aesthetic appeal, used for decorative purposes and electrical products.<\/li>\n<\/ul>\n<\/div>\n
    \n

    Having this basic knowledge will enable you to make appropriate judgments when selecting screws.<\/p>\n<\/div>\n

    \n

    Screw Types and How to Choose Them<\/h3>\n<\/div>\n
    \n

    Screws come in various types depending on their application and the materials they are used with. Choosing the appropriate screw is extremely important for secure fastening and preventing troubles.<\/p>\n<\/div>\n

    \n

    Screw Types by Application<\/h4>\n<\/div>\n
    \n
    Wood Screws: Features, Applications, and Selection Tips<\/h5>\n<\/div>\n
    \n

    Wood screws are used to join wood. They have a pointed tip and advance by forming threads in the wood as they are screwed in. They are commonly used in DIY and furniture assembly.<\/p>\n<\/div>\n

    \n
      \n\u00a0\t<\/p>\n
    • Selection Tips:<\/strong> Choose screws of appropriate length and thickness according to the hardness and thickness of the wood. Thinner screws are suitable for soft wood, while thicker screws are suitable for hard wood.<\/li>\n<\/ul>\n<\/div>\n
      \n
      Tapping Screws: Features, Applications, and Selection Tips<\/h5>\n<\/div>\n
      \n

      Tapping screws are screws that form their own threads when screwed into metal or plastic. They are characterized by their efficiency as they eliminate the need to drill pilot holes.<\/p>\n<\/div>\n

      \n
        \n\u00a0\t<\/p>\n
      • Selection Tips:<\/strong> Choose the appropriate type and size of tapping screw according to the material and thickness of the material to be fastened.<\/li>\n<\/ul>\n<\/div>\n
        \n
        Drill Screws: Features, Applications, and Selection Tips<\/h5>\n<\/div>\n
        \n

        Drill screws are screws with a drill bit at the tip, allowing them to drill a hole while fastening into metal sheets. They are convenient for fastening thick metal sheets.<\/p>\n<\/div>\n

        \n
          \n\u00a0\t<\/p>\n
        • Selection Tips:<\/strong> Choose the appropriate drill diameter, screw length, and thickness according to the thickness and material of the metal sheet to be fastened.<\/li>\n<\/ul>\n<\/div>\n
          \n
          Bolts: Features, Applications, and Selection Tips<\/h5>\n<\/div>\n
          \n

          Bolts are screws used in combination with nuts. They are mainly used for powerfully fastening metals together. They are indispensable for construction and machinery assembly.<\/p>\n<\/div>\n

          \n
            \n\u00a0\t<\/p>\n
          • Selection Tips:<\/strong> Choose bolts of appropriate material, size, and strength according to the strength and application of the members to be fastened.<\/li>\n<\/ul>\n<\/div>\n
            \n
            Other Special Screws<\/h5>\n<\/div>\n
            \n

            In addition to the above, various special screws exist depending on the application. It is important to choose the optimal screw according to the material and purpose of use.<\/p>\n<\/div>\n

            \n

            Screw Shapes and How to Choose Them<\/h4>\n<\/div>\n
            \n
            Head Shapes (Flat Head, Round Head, Pan Head, etc.): Features, Applications, and Selection Tips<\/h5>\n<\/div>\n
            \n

            The shape of a screw head is differentiated based on the finish and application.<\/p>\n<\/div>\n

            \n
              \n\u00a0\t<\/p>\n
            • Flat Head:<\/strong> Finishes flush with the surface of the material, used in places where aesthetics are important or where snagging needs to be eliminated.<\/li>\n

              \u00a0\t<\/p>\n

            • Round Head:<\/strong> Has a round head that protrudes slightly above the material. Used for decorative purposes or when tightening force needs to be distributed.<\/li>\n

              \u00a0\t<\/p>\n

            • Pan Head:<\/strong> Has a flat top with some height. Widely used for general purposes.<\/li>\n<\/ul>\n<\/div>\n
              \n
              Thread Shapes (Coarse Thread, Fine Thread): Features, Applications, and Selection Tips<\/h5>\n<\/div>\n
              \n

              Screw thread shapes include coarse threads and fine threads.<\/p>\n<\/div>\n

              \n
                \n\u00a0\t<\/p>\n
              • Coarse Thread:<\/strong> Used for general purposes.<\/li>\n

                \u00a0\t<\/p>\n

              • Fine Thread:<\/strong> Less likely to loosen and used when precise tightening is required.<\/li>\n<\/ul>\n<\/div>\n
                \n
                Full Thread and Partial Thread: Features, Applications, and Selection Tips<\/h5>\n<\/div>\n
                \n

                Screws include full-threaded screws, which have threads along the entire shaft, and partially-threaded screws, which only have threads on part of the shaft.<\/p>\n<\/div>\n

                \n
                  \n\u00a0\t<\/p>\n
                • Full Thread:<\/strong> Used when powerful tightening is required.<\/li>\n

                  \u00a0\t<\/p>\n

                • Partial Thread:<\/strong> Used when materials need to be brought into close contact.<\/li>\n<\/ul>\n<\/div>\n
                  \n

                  How to Choose Screw Length and Thickness<\/h4>\n<\/div>\n
                  \n
                  How to Choose Based on the Thickness of the Material to be Fastened<\/h5>\n<\/div>\n
                  \n

                  The length of the screw is chosen according to the thickness of the material to be fastened. Generally, for wood, it is good to choose a screw 2 to 3 times the thickness of the material.<\/p>\n<\/div>\n

                  \n
                  How to Choose Based on Strength<\/h5>\n<\/div>\n
                  \n

                  The thickness of the screw is chosen according to the required strength. Thicker screws must be used when supporting heavy objects or in places where strong forces are applied.<\/p>\n<\/div>\n

                  \n

                  By referring to these points and choosing the appropriate screw according to the application and purpose, you can achieve safe and secure fastening.<\/p>\n<\/div>\n

                  \n

                  Screw Strength<\/h3>\n<\/div>\n
                  \n

                  Screw strength is a very important factor in creating safe products. By choosing screws of appropriate strength, the durability and safety of the product can be enhanced.<\/p>\n<\/div>\n

                  \n

                  Factors Affecting Screw Strength<\/h4>\n<\/div>\n
                  \n
                  Material<\/h5>\n<\/div>\n
                  \n

                  The material of the screw greatly affects its strength. Generally, carbon steel and alloy steel have high strength, while stainless steel has excellent corrosion resistance but may have lower strength compared to carbon steel.<\/p>\n<\/div>\n

                  \n
                  Strength Class<\/h5>\n<\/div>\n
                  \n

                  Screw strength classes are defined by JIS standards and others, and are engraved on the screw head. By looking at this classification, you can understand the tensile strength and yield point of the screw. For example, numbers such as “4.8”, “8.8”, and “10.9” represent the strength of the screw.<\/p>\n<\/div>\n

                  \n

                  How to Choose Screws of Appropriate Strength According to Application<\/h4>\n<\/div>\n
                  \n

                  When using screws, it is important to choose screws of appropriate strength according to the application.<\/p>\n<\/div>\n

                  \n
                    \n\u00a0\t<\/p>\n
                  • When high strength is required:<\/strong> For places requiring high strength, such as buildings and bridges, use high-strength bolts or screws with high strength classes (8.8 or higher).<\/li>\n

                    \u00a0\t<\/p>\n

                  • General purpose:<\/strong> For general purposes such as furniture and DIY, use screws with a medium strength class (around 4.8).<\/li>\n

                    \u00a0\t<\/p>\n

                  • Corrosive environment:<\/strong> For corrosive environments such as coastal areas or outdoors, use stainless steel screws.<\/li>\n<\/ul>\n<\/div>\n
                    \n

                    By choosing screws of appropriate strength, you can ensure product safety and use them with peace of mind for a long time.<\/p>\n<\/div>\n

                    \n

                    Troubles and Countermeasures When Using Screws<\/h3>\n<\/div>\n
                    \n

                    Various troubles can occur when using screws. To prevent these troubles and work safely, it is important to firmly understand the causes and countermeasures.<\/p>\n<\/div>\n

                    \n

                    Common Trouble Cases<\/h4>\n<\/div>\n
                    \n
                    Screws Loosen<\/h5>\n<\/div>\n
                    \n

                    If screws loosen, it can cause parts to detach or become wobbly. This trouble is likely to occur in places with high vibration or where repetitive forces are applied.<\/p>\n<\/div>\n

                    \n
                    Screws Break<\/h5>\n<\/div>\n
                    \n

                    If excessive force is applied to a screw, it may break. This is particularly likely to happen when using thin screws or screws with low strength.<\/p>\n<\/div>\n

                    \n
                    Screw Holes Strip<\/h5>\n<\/div>\n
                    \n

                    If a screw is overtightened or screwed in at an angle, the screw hole may strip. When this happens, the screw can no longer be firmly fixed.<\/p>\n<\/div>\n

                    \n
                    Rusts<\/h5>\n<\/div>\n
                    \n

                    Iron screws may rust if used in humid places or outdoors. Rust can cause the screw to seize and become impossible to remove, or reduce its strength.<\/p>\n<\/div>\n

                    \n
                    Fastening Failure<\/h5>\n<\/div>\n
                    \n

                    If the screw is chosen or tightened inappropriately, the material may not be firmly fixed. This occurs when the screw length or thickness is insufficient, or when the tightening torque is lacking.<\/p>\n<\/div>\n

                    \n

                    Causes of Troubles and Countermeasures<\/h4>\n<\/div>\n
                    \n
                    How to Choose the Right Screw<\/h5>\n<\/div>\n
                    \n

                    To prevent troubles, it is crucial to first choose the appropriate screw for the application and usage environment.<\/p>\n<\/div>\n

                    \n
                      \n\u00a0\t<\/p>\n
                    • Loosening countermeasures:<\/strong> Use self-locking nuts or washers, apply thread-locking fluid.<\/li>\n

                      \u00a0\t<\/p>\n

                    • Breakage countermeasures:<\/strong> Choose high-strength screws, do not apply excessive force.<\/li>\n

                      \u00a0\t<\/p>\n

                    • Screw hole stripping countermeasures:<\/strong> Drill pilot holes appropriately, do not screw in at an angle, tighten with appropriate torque.<\/li>\n

                      \u00a0\t<\/p>\n

                    • Rust countermeasures:<\/strong> Use stainless steel screws, apply rust prevention treatment.<\/li>\n

                      \u00a0\t<\/p>\n

                    • Fastening failure countermeasures:<\/strong> Choose screws of appropriate length and thickness for the material, tighten with appropriate torque.<\/li>\n<\/ul>\n<\/div>\n
                      \n
                      Correct Tightening Method<\/h5>\n<\/div>\n
                      \n

                      When tightening screws, it is important to use the appropriate tools and follow the correct method.<\/p>\n<\/div>\n

                      \n
                        \n\u00a0\t<\/p>\n
                      • Tool selection:<\/strong> Use a screwdriver or wrench of the correct size for the screw head.<\/li>\n

                        \u00a0\t<\/p>\n

                      • Tightening torque:<\/strong> Tighten with the appropriate torque according to the screw size and material.<\/li>\n

                        \u00a0\t<\/p>\n

                      • Tightening angle:<\/strong> Screw in the screw perpendicularly.<\/li>\n<\/ul>\n<\/div>\n
                        \n
                        Maintenance Method<\/h5>\n<\/div>\n
                        \n

                        Regular maintenance is necessary to use screws for a long time.<\/p>\n<\/div>\n

                        \n
                          \n\u00a0\t<\/p>\n
                        • Inspection:<\/strong> Periodically check for loose screws or rust.<\/li>\n

                          \u00a0\t<\/p>\n

                        • Re-tightening:<\/strong> Re-tighten loose screws.<\/li>\n

                          \u00a0\t<\/p>\n

                        • Rust prevention treatment:<\/strong> Apply rust preventative as needed.<\/li>\n<\/ul>\n<\/div>\n
                          \n

                          By taking these countermeasures, you can reduce screw-related troubles and perform work safely and comfortably.<\/p>\n<\/div>\n

                          \n

                          Key Points for Choosing Screws in DIY, Furniture, and Construction<\/h3>\n<\/div>\n
                          \n

                          Screw selection plays a crucial role in various situations, including DIY, furniture assembly, and construction. By choosing the appropriate screw according to the application and purpose, you can ensure the beauty of the finish, strength, and safety.<\/p>\n<\/div>\n

                          \n

                          Key Points for Choosing Screws in DIY<\/h4>\n<\/div>\n
                          \n
                          How to Choose According to Wood Type<\/h5>\n<\/div>\n
                          \n

                          Wood types include softwoods (cedar, cypress, etc.) and hardwoods (oak, beech, etc.), each with different hardness and properties. It is advisable to choose thinner screws for softwoods and thicker screws for hardwoods. Also, depending on the wood type, the holding power of the screw may differ, so it is important to choose screws of appropriate length.<\/p>\n<\/div>\n

                          \n
                          How to Choose According to Application<\/h5>\n<\/div>\n
                          \n

                          In DIY, screws are used for various purposes such as shelf creation, wall mounting, and flooring fixation. Choose screws with the necessary strength and durability according to each application. For example, for shelves supporting heavy objects, using thick and long screws provides peace of mind.<\/p>\n<\/div>\n

                          \n

                          Key Points for Choosing Screws in Furniture Assembly<\/h4>\n<\/div>\n
                          \n
                          How to Choose Considering Appearance<\/h5>\n<\/div>\n
                          \n

                          In furniture assembly, the shape and material of the screw head affect the beauty of the finish. Using flat head screws results in a flush finish where the screw head does not protrude from the surface. It is also possible to choose screws with an emphasis on appearance, such as brass screws or decorative screws.<\/p>\n<\/div>\n

                          \n
                          How to Choose Considering Strength<\/h5>\n<\/div>\n
                          \n

                          As furniture is subject to loads during use, strength is also an important factor. Especially for furniture that supports human weight, such as chairs and tables, it is necessary to choose strong screws. Check the screw’s strength class and choose screws appropriate for the application.<\/p>\n<\/div>\n

                          \n

                          Key Points for Choosing Screws in Construction<\/h4>\n<\/div>\n
                          \n
                          Differences Between Structural Materials and Finishing Materials<\/h5>\n<\/div>\n
                          \n

                          In construction, different types of screws are used for structural materials (columns, beams, etc.) and finishing materials (wall materials, flooring materials, etc.). For structural materials, bolts or high-strength screws with strength defined by building codes must be used. On the other hand, for finishing materials, screws that consider appearance and ease of construction are chosen.<\/p>\n<\/div>\n

                          \n
                          How to Choose Considering Safety<\/h5>\n<\/div>\n
                          \n

                          Since buildings affect human lives, the safety of screws is extremely important. By choosing appropriate screws and executing construction correctly, the durability and safety of the building can be ensured. Comply with building codes and related laws and regulations, and use screws from reliable manufacturers.<\/p>\n<\/div>\n

                          \n

                          Summary<\/h3>\n<\/div>\n
                          \n

                          Screws are small parts that support our lives, but their selection alone can significantly change safety and comfort. This article has explained everything about screws, from their basics to how to choose them, troubleshooting, and specific points in DIY, furniture, and construction.<\/p>\n<\/div>\n

                          \n

                          Choosing the appropriate screw is not merely about fixing things but is crucial for enhancing safety and durability. Refer to this article to choose the optimal screws for your application and purpose, and realize a comfortable DIY life and a safe home.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

                          We will provide comprehensive explanations of all kinds of information about screws, from how to choose screws to common problems and countermeasures, to how to use them in DIY, furniture, and construction.<\/p>\n","protected":false},"author":4,"featured_media":4343,"template":"","meta":{"_acf_changed":false,"_locale":"en_US","_original_post":"https:\/\/ohtavn.com\/?post_type=media&p=4342","footnotes":"","title":"How to choose screws that won't fail: Common problems and countermeasures","_title":"field_639aec69b01cd","keywords":"Screws, bolts, fastening parts, professional tools, precision machining, parts sales","_keywords":"field_639aec76b01ce","description":"We will provide comprehensive explanations of all kinds of information about screws, from how to choose screws to common problems and countermeasures, to how to use them in DIY, furniture, and construction.","_description":"field_639aec87b01cf","h1":"How to choose screws that won't fail: Common problems and countermeasures","_h1":"field_639aec90b01d0","main-title":"","_main-title":""},"media-cat":[23],"class_list":["post-4405","media","type-media","status-publish","has-post-thumbnail","hentry","media-cat-column","en-US"],"acf":[],"_links":{"self":[{"href":"https:\/\/ohtavn.com\/wp-json\/wp\/v2\/info-media\/4405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ohtavn.com\/wp-json\/wp\/v2\/info-media"}],"about":[{"href":"https:\/\/ohtavn.com\/wp-json\/wp\/v2\/types\/media"}],"author":[{"embeddable":true,"href":"https:\/\/ohtavn.com\/wp-json\/wp\/v2\/users\/4"}],"version-history":[{"count":4,"href":"https:\/\/ohtavn.com\/wp-json\/wp\/v2\/info-media\/4405\/revisions"}],"predecessor-version":[{"id":4621,"href":"https:\/\/ohtavn.com\/wp-json\/wp\/v2\/info-media\/4405\/revisions\/4621"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ohtavn.com\/wp-json\/wp\/v2\/media\/4343"}],"wp:attachment":[{"href":"https:\/\/ohtavn.com\/wp-json\/wp\/v2\/media?parent=4405"}],"wp:term":[{"taxonomy":"media-cat","embeddable":true,"href":"https:\/\/ohtavn.com\/wp-json\/wp\/v2\/media-cat?post=4405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}