Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LD420012ITEM34 found under Plunger And Sleeve by Polytechnic Industriesinc. The National Stock Number assigned to this part is 1440008306883, 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 LD420012ITEM34.