Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y6-66-C found under Boltmachine by Ingersoll Rand Inc. The National Stock Number assigned to this part is 5306016838748, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like Y6-66-C.