Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PN8550 found under Pin Grooved Headed by Automotive Parts Co. The National Stock Number assigned to this part is 5315011674150, 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 PN8550.