Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 100BS7-221 found under Blanket Heater by Acme Electric Corporation. The National Stock Number assigned to this part is 6115011190645, and the Federal Supply Class is 6115 Generators And Generator Sets Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 100BS7-221.