Question

a bolts grade or class is defined by its ____________. shear torsional fatigue tensile

Explanation:

Bolts grades are determined by their tensile - strength properties which indicate how much pulling force they can withstand before breaking. Shear strength is about resistance to sliding forces, torsional strength to twisting, and fatigue strength to repeated loading. Tensile strength is the key for defining bolt grades.

Answer:

D. tensile