Torsion testing
Heat-treatable steels
Test specimens
Testing conditions
Crystal microstructure
Surface properties
Performance testing
Hardness
Case-hardening steels
Strength of materials
Heat treatment
Self-tapping screws
Drilling
Mechanical properties of materials
Mechanical testing
Inspection
External-thread fasteners
Screws (bolts)
Embrittlement
Hardness measurement
Steels
Test equipment
Torsional strength
Threaded fasteners
Fasteners