Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C3-05R-303 found under Pin Quick Release by Aerofast Inc. The National Stock Number assigned to this part is 5315015533746, and the Federal Supply Class is 5315 Nails Machine Keys And Pins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C3-05R-303.