Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S-10 ITEM NO. 12 found under Deflector Dirt And by Insinger Machine Company The. The National Stock Number assigned to this part is 5340014636626, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S-10 ITEM NO. 12.