Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CC3-37B found under Valve Linear Direct by Parker Stratoflex. The National Stock Number assigned to this part is 4820012572186, 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 CC3-37B.