Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11-431 found under Headband Goggles by Oakleyinc. The National Stock Number assigned to this part is 4240015786103, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 11-431.