Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SM-D-850482-2 found under Case Optical Instrument by Dresser Argus Inc. The National Stock Number assigned to this part is 1240010392830, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SM-D-850482-2.