Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5111-2 found under Cam Plunger Drop Line by Air Lock Incorporated. The National Stock Number assigned to this part is 4240007062024, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5111-2.