Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C13373 FIG 20-75 IN. ITEM 5 found under Ring Retaining by Anderson Greenwood Lp. The National Stock Number assigned to this part is 5325012966489, 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 C13373 FIG 20-75 IN. ITEM 5.