Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HHB400-5001L found under Valve Linear Direct by Parker Stratoflex. The National Stock Number assigned to this part is 4810014256680, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HHB400-5001L.