Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D40 ITEM 10 found under Bearing Ball Pivot by Danco Valve Company. The National Stock Number assigned to this part is 3110015465444, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D40 ITEM 10.