Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S6PEC6-4-56 found under Coupling Half Quick Disconnect by Snap Tite Inc. The National Stock Number assigned to this part is 4730005414773, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S6PEC6-4-56.