Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 161A13S125 found under Ringretaining by Curtiss Wright Electro Mechanical Corporation Div Steam And Air Solutions. The National Stock Number assigned to this part is 5325016737651, 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 161A13S125.