Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KEST5BH found under Repair Kit Valve by Anchor Flange Company. The National Stock Number assigned to this part is 4820016164010, 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 KEST5BH.