Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 120-9141 found under Retainer Webbing Adapter by H Koch And Sons Co. The National Stock Number assigned to this part is 1660008955659, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 120-9141.