"NSN USED TO PURCHASE A MINIMUM OF 160 CONTAINERS AND UP;CERTIFICATION PWA 1335,GE B50TF92 AND AVCO M 3962A;RH 85-95 HARDNESS;2000 PSI MINIMUM STRENGTH;BEST FINISHES WITH A CARBIDE TOOL;POWDER OF ALUMINUM ALLOYED W/12% SILICON.PRODUCES COATINGS WHICH ARE HARDER AND SLIGHTLY DENSER BUT SOMEWHAT LESS CORROSION-RESISTANT THAN PAC19 OR 19NS.USEFUL FOR REPAIROF WORN OR MISMATC HED ALUMINUM OR MAGNESIUM SUBSTRATES"