>> Search results for: MDG190 NSN Search Results National Stock Number (NSN) Description 4210-99-139-5541, 4210991395541 EXTINGUISHER,FIRE,C 4210-99-942-5952 , 4210999425952 KEY,T,HYDRANT,FIRE 4210-99-139-5542, 4210991395542 EXTINGUISHER,FIRE,C 1 Related Inventory Search You can use this search box to continue searching. Search parameters can include any combination of characteristics, specifications, description, partial part numbers, NSN or other stocking number. Special characters are not needed and are automatically stripped before searching. Do you sell this part? Become part of our growing pool of certified suppliers. Send Information