Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0064 4538 found under Pin Spring by J Blackwood And Son Pty Ltd. The National Stock Number assigned to this part is 5315010078299, 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 0064 4538.