Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5301-30-001-BLK found under Coupling Half Clamp by Seco Manufacturing Co Inc. The National Stock Number assigned to this part is 5342016295035, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5301-30-001-BLK.