Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SM228R225F found under Resistor Fixed Wire Wound Induct by Precision Resistor Co Inc. The National Stock Number assigned to this part is 5905002793327, 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 SM228R225F.