Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AFB000300-12 found under Ring Retaining by The Hymatic Enginnering Company. The National Stock Number assigned to this part is 5325008046855, 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 AFB000300-12.