Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 303 0012 38 found under Resistor Variable Nonwire Wound Nonprecision by Brown Electro Measurement Corp. The National Stock Number assigned to this part is 5905011168337, 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 303 0012 38.