Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 201-58635 found under Valve Plug by Hi Shear Corporation. The National Stock Number assigned to this part is 4820003495299, 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 201-58635.