Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SFT1139-1 found under Nrp Portable Oper S by Accurate Machine Company. The National Stock Number assigned to this part is 4920016047418, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SFT1139-1.