Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K258-648 found under Resistor Fixed Wire Wound Induct by Kelvin Industries Inc. The National Stock Number assigned to this part is 5905000514226, 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 K258-648.