Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C1 012B 01S found under Hinge Pivot Pin Detent Spring by Lee Spring Co Inc. The National Stock Number assigned to this part is 5315016619751, 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 C1 012B 01S.