Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ST021700AV found under Bearing Roller Needle by Grainger Div Of W W Grainger Inc. The National Stock Number assigned to this part is 3110012365034, 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 ST021700AV.