Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C73A6 found under Valve Sander by Coltec Industries Inc. The National Stock Number assigned to this part is 2240003651745, and the Federal Supply Class is 2240 Locomotive And Rail Car Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C73A6.