Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M9237-I ITEM 28 found under Rectifier Metallic by Engine Monitor Inc. The National Stock Number assigned to this part is 6130013951651, 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 M9237-I ITEM 28.