Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SP1791A found under Duct Rack Equipme by Stop Choc Limited. The National Stock Number assigned to this part is 1680004717527, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SP1791A.