I will introduce tensile stress σ and shear stress τ!
When tightening bolts and nuts, the points to be aware of regarding the relationship between the tightening torque and axial force in the threaded joint can be broadly categorized into the following two points: (1) When the tightening torque is too high relative to the strength of the bolt and nut. (2) When the tightening torque is too low relative to the strength of the bolt and nut. Our technical information site "Screw Fastening Technology Navi," which contributes to solving issues related to screw fastening, confirms the stresses that occur inside the bolt during fastening and addresses the issue of screw failure when the tightening torque is too high, providing detailed information on this topic. Please take a look at the related links. *For more details, please feel free to contact us.
Inquire About This Product
basic information
For more details, please feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
For more details, please feel free to contact us.
catalog（2）
Download All Catalogs![Lock Parts "HLS [Hard Rock Set Screw] (R) Catalog"](https://image.mono.ipros.com/public/catalog/image/01/543/445119/IPROS79111561619361849476.jpeg?w=120&h=170)
Company information
Hard Rock Industries is a company that develops, produces, and sells "locking nuts," and it was established in 1974. Our Hard Rock Nuts were created from the strong desire of our founder and technical president, Katsuhiko Wakabayashi, to eliminate accidents caused by loosening screws and to create a safe and secure society. We are still advancing the development and improvement of new anti-loosening products. Our products are used in critical safety locations and areas where maintenance and inspection are challenging. <Main Clients> Railway market (vehicles, tracks, overhead lines, etc.), bridges and highways, transmission towers, construction and civil engineering, plant equipment, industrial machinery, etc.
![[Technical Information] Achieving anti-loosening effect based on the principle of "wedge."](https://image.mono.ipros.com/public/product/image/4f3/2000509215/IPROS09799946604941487388.png?w=280&h=280)
![[Technical Information] Basic Knowledge of Understanding Loosening: Proper Tightening of Screws](https://image.mono.ipros.com/public/product/image/545/2000560041/IPROS04668292118070636294.png?w=280&h=280)
![[Technical Information] About the Principle of Loosening: Basic Edition](https://image.mono.ipros.com/public/product/image/4d2/2000560043/IPROS54724764275627571407.png?w=280&h=280)
![[Technical Information] How to detect looseness? (Junker Test)](https://image.mono.ipros.com/public/product/image/a55/2000560048/IPROS49152938194157321064.png?w=280&h=280)
![[Technical Information] On Metal Damage: "Corrosion"](https://image.mono.ipros.com/public/product/image/5e0/2000562855/IPROS81425890521319564406.png?w=280&h=280)
