External-thread fasteners
Threads
Hexagonal-head fasteners
Quality assurance
Fasteners
Hardness
Unified screw threads
Tensile testing
Metallography
Pan-head fasteners
Marking
Air transport engineering
Heat treatment
Aircraft components
Steels
Aluminium alloys
Statistical quality control
Space technology components
Internal-thread fasteners
Defects
Macroscopic examination
Threaded components
Surface defects
Forgings
Nuts
Dimensional tolerances
Bolts
Acceptance inspection
Inspection
Threaded fasteners