Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 189-669 found under Locknut Pipe by Soltam Systems Ltd. The National Stock Number assigned to this part is 4730015134864, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 189-669.