Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D414-15-12-487 ITEM 4 found under Gear Worm by Merrell Dow Pharmeceuticals Inc. The National Stock Number assigned to this part is 3020013042893, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D414-15-12-487 ITEM 4.