Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 635543 found under Battery Power Suppl by Mine Safety Appliances Co Ltd. The National Stock Number assigned to this part is 6130014243859, 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 635543.