DIN 906 hexagon socket pipe plug, conical thread, M18 x 1.5, Article number 90618151. Property class / material: steel, surface finish zinc plated. Hexagon Socket Pipe Plug, Conical Thread manufactured to DIN 906 with ISO metric (M) thread, coarse pitch. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution. Applications: sealing of threaded ports in gearboxes, hydraulic and pneumatic equipment, engines and plant pipework.