Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 27D111 found under Washer Flat by Curtis Straus Llc. The National Stock Number assigned to this part is 5310001522656, 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 27D111.