Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 100-5221 found under Resistor Variable Wire Wound Non by Vishay Thin Film Llc. The National Stock Number assigned to this part is 5905000229546, 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 100-5221.