Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 23056663-0055 OVERSIZE found under Stud Locked In by Allison Transmission Holdings Inc. The National Stock Number assigned to this part is 5307014466474, and the Federal Supply Class is 5307 Studs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 23056663-0055 OVERSIZE.