Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MA05-4531B found under Resistor Fixed Wire Wound Induct by R H O Engineering Co. The National Stock Number assigned to this part is 5905000058809, 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 MA05-4531B.