Thread Stress & Strength Calculator | Bolt Load & Shear Tool

thread stress Tool Formula:

Tensile Stress Area (A_t):

\[ A_{t} = (\pi / 4) \times (D - 0.9382 \times P)^{2} \]

(where D = nominal diameter, P = thread pitch)

Tensile Strength (F_t):

\[ F_{t} = A_{t} \times S_{t} \]

(where A_t = tensile stress area, S_t = tensile strength)

Shear Strength (F_s):

\[ F_{s} = 0.577 \times A_{t} \times S_{s} \]

(where S_s = shear strength)

The Thread Stress and Strength Calculator is useful in engineering, studying, and design when analyzing the safety and strength of threaded fasteners, including bolts, screws, and studs. Tensile, shear, and bearing stresses occur in threads with respect to the applied axial load, torque, and thread geometry.

The user can key in bolt diameter, pitch, tensile load, material strength, and thread engagement length. The tensile stress, shear stress, bearing stress, allowable load, and factor of safety have been calculated. The formulas on how to compute axial tension, shear,r, and thread strength are presented in steps so that it becomes easy to tailor the design of fasteners to achieve safety and reliability.

SI units are acceptable: N, kN, mm, MPa. The tool will be perfect in the field of mechanical engineers, design engineers, students, and educators dealing with machinery, structural joints, automobile assemblies, and pressure vessels to design threaded connections correctly and safely.