Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PG21 SCREW found under Stuffing Tube by Haacon Hebetechnik Gmbh. The National Stock Number assigned to this part is 5975123269689, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PG21 SCREW.