EngineerBenchFasteners calculators
Thread specificationLook up basic thread geometry from a common designation.Bolt size & grade screeningFind the first metric size meeting an entered direct tension and shear demand.Bolt torqueCalculate torque from preload, or preload from a measured torque.Bolt shearCheck direct bolt shear and connected-plate bearing.Thread engagementEstimate full engagement required to match bolt tensile strength.Bolted-joint analyzerCheck bolt load, residual clamp, separation, and slip.Fastener-pattern loadsResolve direct shear and in-plane moment at each bolt.