"NSN IS USED TO PURCHASE A MINIMUM OF 20CONTAINRS TO A MAXIMUM OF 59 CONTAINERS;NI 17CR 4FE 4SI 3.5B 1C,SPHEROIDAL,GAS ATOMIZED;-45 +15UM (-325 +15 UM);USED IN AS-SPRAYED OR FUSED CONDITION.COATINGS ARE DENSE,HARD AND OXIDE FREE.USED ON CAM FOLLOWERS, WEAR RINGS AND UTILITY EXHAUST FANS"