Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12818 found under Cap Dust Propeller Shaft by Sicard A Division Of Smi Snowblast. The National Stock Number assigned to this part is 2520006403761, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 12818.