Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 87001838-1 found under Plunger by I S S Div Of Sperry Univac. The National Stock Number assigned to this part is 5342010239586, 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 87001838-1.