Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PHD34744 found under Protractor Special by The Babcock And Wilcox Company. The National Stock Number assigned to this part is 5210012428930, and the Federal Supply Class is 5210 Measuring Tools Craftsmens. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PHD34744.