Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Z40000600085 found under Pin Spring by W S Darley And Co. The National Stock Number assigned to this part is 5315013300260, 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 Z40000600085.