Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3728 125 03 421 found under Pin Straight Headed by Haacon Hebetechnik Gmbh. The National Stock Number assigned to this part is 5315123272184, 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 3728 125 03 421.