Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 301315 ASSY 639040-01-1 found under Gear Operator Valve by Tri Tec Manufacturing Llc. The National Stock Number assigned to this part is 4820016049916, 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 301315 ASSY 639040-01-1.