Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 101059 found under Parts Kit Vent Valve by Hammonds Technical Services Inc. The National Stock Number assigned to this part is 4820016715561, 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 101059.