Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HW1-00139-001 found under Eyelet Metallic by Microsource Corp. The National Stock Number assigned to this part is 5325010844846, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HW1-00139-001.