Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DSK 3020-112 found under Air Conditioner by Mine Safety Appliances Company. The National Stock Number assigned to this part is 4120013541286, and the Federal Supply Class is 4120 Air Conditioning Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DSK 3020-112.