Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KB3856 found under Pin Tapered Plain by Rollsroyce Airlines. The National Stock Number assigned to this part is 5315001435963, 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 KB3856.