Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12S-2K found under Resistor Variable W by Techno Components Corp. The National Stock Number assigned to this part is 5905013443855, and the Federal Supply Class is 5905 Resistors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 12S-2K.