Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ASA B5.20-1958 TYPE A-1 8 found under Pin Grooved Headles by American National Standards Inst. The National Stock Number assigned to this part is 5315014000728, 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 ASA B5.20-1958 TYPE A-1 8.