Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4J40104-101A found under Washer Flat by Anillo Industries Inc. The National Stock Number assigned to this part is 5310015532235, 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 4J40104-101A.