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Bolt Distance Calculator

Bolt Distance Calculator
Hole diameter mm
Edge type:


This Bolt Distance Calculator is engineered to determine the minimum bolt distances from the plate edges and between bolt centers for steel plate connections. Accurate determination of these minimum spacings is crucial to ensuring the structural integrity and longevity of bolted joints.

To use the calculator, enter the following parameters:

  • Bolt hole diameter (d): This value represents the diameter of the hole in the metal plate—not the bolt itself. An exact measurement is essential for the precision of the minimum spacing calculations.
  • Type of plate edge: Select between a cut edge, produced by mechanical processing, or a rolled edge, where the original surface is retained after the rolling process.
  • Special conditions: Indicate if your bolts are high-strength or if the plate steel’s yield strength exceeds 380 MPa. These factors affect the minimum bolt distance and must be incorporated in the calculations.

The calculator automatically computes the minimum distances between bolt centers as well as the distance from the plate edges to the nearest bolts. This ensures optimized fastener placement and enhances connection reliability. Correct spacing helps prevent stress concentrations and deformation, which is particularly important for load-bearing structures.

This tool is indispensable for structural engineers, designers, and builders involved in metal structures, bridges, buildings, and other constructions utilizing bolted connections. It adheres to internationally accepted standards, ensuring both accuracy and dependability in its calculations.

Utilize this calculator for quick and precise determination of optimal bolt connection parameters to boost design efficiency and minimize the time required for manual calculations. Proper bolt placement guarantees even load distribution and enhances the overall strength of the structure.