Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AL10C28HC ITEM 33 found under Ring Retaining by Duffnorton Co Inc. The National Stock Number assigned to this part is 5325012673095, 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 AL10C28HC ITEM 33.