Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2T4C3939 found under Flange Attachment M by Goodyear Tire And Rubber Co. The National Stock Number assigned to this part is 1560008888321, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2T4C3939.