Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 634-8977-001 found under Bus Conductor by Spencer Industries Inc. The National Stock Number assigned to this part is 6150011158426, and the Federal Supply Class is 6150 Miscellaneous Electric Power And Distribution Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 634-8977-001.