Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 55-41A found under Rectifier Metallic by Holmes Carl E Co. The National Stock Number assigned to this part is 6130007027713, 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 55-41A.