Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 51-16170 found under Blade Circular Saw Woodcutting by Simonds Cutting Tools. The National Stock Number assigned to this part is 3230011049610, and the Federal Supply Class is 3230 Tools Attachments For Woodwork Machinery. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 51-16170.