Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PZ1U2531 found under Resistor Variable N by Precision Electronics Inc. The National Stock Number assigned to this part is 5905007613924, 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 PZ1U2531.