Fasteners & Joints Simulators

Calculate bolt preload, working stresses, and fatigue safety factor with this online tool. Input bolt grade, diameter, and load for instant analysis.

Calculate bolt tightening torque, preload, joint stiffness, and fatigue safety factor in real time for grades 4.6–12.9 and sizes M6–M48.

Set preload, external force, and bolt/flange stiffness to analyze load distribution, separation safety factor, and fatigue safety factor in real time. Includes joint dia…

Design the interference fits — press fits and shrink fits — where a shaft made slightly larger than its hub bore is forced together.

A knuckle joint (clevis-and-eye joint with a pin) is one of the most basic mechanical elements that transmits axial tension between two rods while allowing relative rota…

Design the groove (gland) that houses an O-ring seal. Adjust the cord diameter, groove depth, groove width and shaft diameter to see the squeeze (compression), gland fil…

Design the power screw (lead screw) that turns rotary motion into a powerful linear thrust. Adjust the nominal diameter, pitch, number of starts, axial load and thread f…

Calculate contact pressure, assembly force, torque capacity, and stress for press-fit designs using Lamé thick-cylinder equations.

Calculate the strength of a \

Calculate tightening torque, self-locking, and efficiency for metric, UNC, and UNF threads with our real-time bolt torque calculator.

Visualize the contact pressure, sleeve hoop stress, shaft compression and transmissible torque of a shrink fit between a solid shaft and an outer sleeve. Change the diam…