SpecialHybrid Acme style nut and screw design, no brake needed.SpecialSpecialSpecificationsSpecificationsValueAnti-rotationNoBrakeno (self Locking)MaterialCopper; Steel; Zinc; Aluminum; PlasticScrew TypeAcmeTemperature Max150 °FTemperature Min-20 °FUPC Number883680678208Voltage12 VdcWeight13 lbDimensionsDimensionValue[S]11 inPerformancePerformanceValueDuty Cyle25 %Load, Static, Max3000 lbf