Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NK1780-1 found under Cylinder Sleeve by Tyco Valves And Controls Lp. The National Stock Number assigned to this part is 2815010256768, and the Federal Supply Class is 2815 Diesel Engines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NK1780-1.