Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1100 ITEM 12 found under Nut Plain Cap by R And D Machine Rafael Anaya. The National Stock Number assigned to this part is 5310013123251, 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 1100 ITEM 12.