Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4X40 ST A3P found under Pin Cotter by Man Truck And Bus Ag. The National Stock Number assigned to this part is 5315121317424, and the Federal Supply Class is 5315 Nails Machine Keys And Pins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4X40 ST A3P.