... Titanium coating or not,YMW or OSG standard Used for thread forming in Aluminum,stainless steel Material: HSS-Co,HSS-PMCoating: Titanium ... (OSG Standard) G1,G2,G3……G10(YAMAWA Standard)HSS thread forming taps for steel/Gold finish or not Extended life results ... size,Superior wear resistance,heat treated for toughness.*Used for thread forming in copper,brass,aluminum,die castings,leaded steel,low carbon ...