Description Overview Inventory number: E-9590 Air cylinder for assembler Original brand: Martin Air Model: M/546/57 Replacement brand: Norgren (16mm piston rod x 1.5 thread) Specifications Length of main tube: 3.8" (96.6mm) Diameter of bore: 1.23" (31.4mm, 1¼" nominal) Length of piston: 5.66" (143.76mm) Stroke: 50 to 54mm Piston rod diameter: 6.378" (9.6mm, nominal ⅜") Piston rod nut: ¾" x 16 thread