Effects of Screw Strength and Precision on Service Performance

Screw strength and precision largely determine the safety and stability of mechanical structures. When picking screws, you need to weigh both indicators based on your actual working conditions.

Strength and precision are two core standards to judge a screw’s performance and application suitability.

Strength

Strength means how much external force a screw can bear. Its key indicators include tensile strength, shear strength and torsional strength. Screws with higher strength rarely break or deform under load and can withstand heavier weight. Material selection, heat treatment process and thread design all greatly affect a screw’s strength.

Precision

Precision refers to the dimensional and geometric accuracy of a screw, covering major thread diameter, minor thread diameter, pitch and overall length. Screws with high precision fit well with matching parts and create tight, stable joints. The precision level directly impacts assembly quality and service life.

In short, screw strength and precision largely determine the safety and stability of mechanical structures. When picking screws, you need to weigh both indicators based on your actual working conditions.