Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK2-10-4 found under Parts Kit Linear Di by Modular Controls Corp. The National Stock Number assigned to this part is 4820013357319, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SK2-10-4.