♦OEM Precision : Meets Komatsu KES 0204 standards for D-series dozers & WD600. Thread grade 6H, ±0.03mm tolerance, fits original bolts of engine/frame joints.
♦Durable Construction : 10-grade alloy structural steel (ISO 8673), hardness 200~250HV. 12μm Zn-Ni plating resists 1000h salt spray (ASTM B117).
♦Stable Performance : Torque retention ≥95% after 10,000 cycles; -40℃~120℃ tolerance, 20G vibration resistance, no loosening under heavy load.
♦Reduced Downtime : Service life ≥8,000hrs (2.5x generic). Fast thread fit cuts install time to 20 mins; annual failure ≤0.3%.
♦Excellent economic performance ：Long life lowers 35% replacement cost in 5 years; no re-torque within 1000hrs, saving maintenance labor.
