Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SRDM4523FTMTMSW 2.0IN found under Valve Ball by F S Welsford Company. The National Stock Number assigned to this part is 4820016105334, 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 SRDM4523FTMTMSW 2.0IN.