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ZT68 is a 600 MPa-class cold-headed 7-series Al-Zn-Mg-Cu bolt for magnesium/aluminum lightweight joints. Measured Rm 629MPa, yield 510MPa, elongation 8%, 6

Pre-applied threadlocker builds anti-loosening onto bolts at the factory. Compare nylon-insert (TufLok) vs microcapsule chemical adhesive (3M 2353, Precote

MoS2 and graphite dry films give fasteners oil-free self-lubrication via layered crystals and transfer film. Compare heavy-load vacuum MoS2 vs atmosphere g

PTFE dry film gives fasteners oil-free self-lubrication with friction coefficient 0.05-0.15, -200 to 260C range and chemical inertness. Compare PTFE vs oil

Zinc-nickel plating offers 720-1000h+ neutral salt spray with no hexavalent chromium for NEV high-strength bolts. Learn its corrosion mechanism, de-embritt

Dacromet is a non-electrolytic zinc-aluminum flake coating with no hydrogen embrittlement and 500-1500h neutral salt spray. Learn its barrier/sacrificial/p

CVD grows dense TiC/TiN/Al2O3 hard films at high temperature with conformal deep-hole coverage. Learn why it suits heat-resistant parts but 10.9/12.9 bolts

PVD deposits TiN/TiCN/TiAlN/CrN nano hard films in vacuum. Compare hardness 1800-3500HV, hydrogen-embrittlement-free, dimensional stability vs electroplati

DLC is a vacuum amorphous hard carbon film blending sp3 diamond hardness with sp2 graphite lubrication. Learn its microstructure, hardness 1500-3000HV, fri

LC coating combines corrosion resistance, self-lubrication and stable torque for precision fasteners. Compare the vacuum LC-DLC and polymer dry-film routes