Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 664977 found under Pin Turbine by Harvard Precision Components Inc. The National Stock Number assigned to this part is 5315004073125, 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 664977.