Torsion testing
Chemical composition
Ductility testing
Embrittlement
Breaking load
External-thread fasteners
Threaded fasteners
Depth measurement
Heat treatment
Case-hardening
Test equipment
Tensile loading
Marking
Performance testing
Tempering
Hardness
Hardness testing
Performance
Torque
Compositional tolerances
Case-hardening steels
Tensile testing
Threads
Rolling
Diameter
Preferred sizes
Screws (bolts)
Fasteners
Steels
Dimensions
Mechanical properties of materials