Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9427.57 found under Socket Straight Shank Tool by Wartsila Diesel Inc. The National Stock Number assigned to this part is 3460014467191, 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 9427.57.