Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 263SB257 found under by Vme Americas Inc. The National Stock Number assigned to this part is 3815001977310, and the Federal Supply Class is 3815 Crane And Crane Shovel Attachments. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 263SB257.