Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ST90-ALO-16 2X3 16X1 4 found under Wheel Abrasive by Brightboy Abrasives Inc. The National Stock Number assigned to this part is 3460012254410, and the Federal Supply Class is 3460 Machine Tool Accessories. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ST90-ALO-16 2X3 16X1 4.