"NSN IS USED TO PURCHASE A MINIMUM OF 20CONTAINRS TO A MAXIMUM OF 59 CONTAINERS;NI 5MO 5AL,SPHEROIDAL,GAS ATOMIZED;-90+37 UM (-170+400 MESH);CERTIFICATION ALLIED SIGNAL EMS 57749,CLASS I AND EMS 52432,CLASS XIII;GENERAL PURPOSE MATERIAL FOR PRODUCING MEDIUM HARD COATINGS FOR HARD BEARING AND WEAR RESISTANCE APPLICATIONS.COATINGS ARE SELF-BONDING,EXTREMELY TOUGH AND CAPABLE OF EXHIBITING GOOD EROSION AND IMPACT RESISTANCE.CAN BE USED TO PROTECT PARTS SUCH AS MACHINE ELEMENTS,BEARING SEATS AND VALVES"