Thread Shear Strength Calculation

Thread shear calculation

Input data:

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Calculation result:

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Thread shear calculation formula

d = √ [4 × F / (π × τsr × i × z)]

τsr = (0.25…0.35) × σt

d — bolt diameter, mm;

F — applied load, H;

τsr — permissible shear stress, MPa;

σt — material yield strength, MPa;

z — number of shear planes, pcs;

i — number of rods, pcs;

0.25…0.35 — permissible stress coefficient

Learn more about the calculations by referring to SP 16.13330.2011 «Steel Structures»

Information

Our online Thread Shear Strength Calculation tool enables you to swiftly conduct shear assessments to determine the minimum required diameter of a threaded rod under a designated load. This digital solution streamlines the process by allowing you to select the optimal rod size based on the metal’s inherent properties and the applied force.

The primary challenge with bolted joints connecting multiple elements is mitigating the adverse effects that force may have on threaded connections. To accurately gauge the strength of the bolt component, it is essential to perform the calculation based on precise material data—especially the yield strength. These critical values have been meticulously compiled into comprehensive tables.

For robust strength verification, it is advisable to sequentially validate rod diameters against the real stress conditions. The objective is to choose a diameter that ensures the applied load does not compromise the material’s integrity. Both thread shear and crush analyses are particularly crucial when one of the components is composed of a material with lower strength or when employing non-standard threaded specifications.

Advantages

The online calculator provides several valuable benefits for performing thread shear calculations:

  • Efficiency and ease of use: no downloads or installations required;
  • Universal accessibility: no registration needed;
  • Precision and clarity: the interface features all essential labels along with user-friendly guidance.

One significant advantage is the remarkable time savings: entering data and testing various configurations takes only seconds, granting rapid access to accurate outcomes.

Data

The online calculator requires only a few essential input parameters:

  • Applied load (expressed in Newtons);
  • Theoretical yield strength of the selected material (MPa);
  • Stress coefficient (dimensionless);
  • Number of stress planes (pcs.);
  • Required number of threaded rods (pcs.).

Once the data is entered, the embedded algorithm promptly performs all the necessary computations, displaying the results directly on the calculator’s interface.

This Thread Shear Strength Calculation tool is designed to help you assess thread shear strength, evaluate shear forces on threaded connections, and compute shear stresses. It is particularly useful for ensuring that thread turns do not lead to joint failure under applied loads, making it an indispensable resource for precise bolt shear assessments and ensuring reliable structural performance.

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