Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HG500D4R990F found under Resistor Fixed Wire Wound Inductive by Vishay Dale Electronics Inc. The National Stock Number assigned to this part is 5905000224348, 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 HG500D4R990F.