Superior Corrosion Resistance: Dacromet can provide 3 to 10 times the corrosion protection of standard zinc plating, withstanding over 1,000 hours in salt spray tests. Perfect Fit: Our 8M-1.25 thread T-50 torx head screws are same as OEM. We did not enlarge our torx heads like some aftermarket screws. This can cause wear on the countersunk holes on your JK door, hood and tailgate hinges. Even Coating: The coating process used for black dacromet ensures a continuous and even layer, even on intricate shapes, unlike traditional galvanization or zinc plating. Black dacromet is the standard industry for being highly salt resistance and paint friendly. Zinc Plating tends to peel after painting since the surface is not porous Sacrificial and Barrier Protection: Dacromet uses both the sacrificial protection of zinc flakes and the barrier effect of the metallic and oxide components for excellent protection And last of all: Black Dacromet plating is superior to standard zinc plating in almost every major performance category, especially corrosion and temperature resistance. Replacement for Mopar 6509101AA. Our Screws are black Dacromet's coating and have a multi-layered structure and provide high adhesion, wear resistance, and can extend the component's lifespan to over 20 years. Black zinc will corrode 5 times faster than Black Dacromet.Black Dacromet is easier to paint since painting zinc plated surfaces cause the paint to peel shortly after. Manufacturers do not use zinc plated screws for this application for that reason and many others including inferior corrosion resistance and zinc plating will corrode quickly if exposed to salt. Zinc plating is for indoor use mainly. We absorbed the extra cost to sell you the best screws for your jeep available