Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 33C857-001 found under Receptacle Turnlock Fastener by Ail Systems Inc. The National Stock Number assigned to this part is 5325009409557, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 33C857-001.