Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SFA 312 found under Nut And Washer Assy by Jergens Inc. The National Stock Number assigned to this part is 5310010729291, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SFA 312.