Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4D9138N3-038 found under Bushing Sleeve by Boeing Company The. The National Stock Number assigned to this part is 3120014189388, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4D9138N3-038.