Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 212 558 found under Rectifier Metallic by Miller Electric Mfg Co. The National Stock Number assigned to this part is 6130015965529, and the Federal Supply Class is 6130 Converters Electrical Non Rotating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 212 558.