Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS MB 83 133 found under Actuator Hydraulic by Swagelok Ltd. The National Stock Number assigned to this part is 4810012782631, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MS MB 83 133.