Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XS1 1312B found under Resistor Variable Wire Wound Precision by West Cap Arizona. The National Stock Number assigned to this part is 5905000754874, 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 XS1 1312B.