Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S L 228 NUMBER 7 found under Nut Self Locking He by Traction Technologies Europe. The National Stock Number assigned to this part is 5310992547425, 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 S L 228 NUMBER 7.