Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A11523-045 found under Washer Lock by Anderson Greenwood Lp. The National Stock Number assigned to this part is 5310011245794, 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 A11523-045.