Material: Assorted sheet metal screws in black are built with 410 stainless steel, which can easily penetrate into metal sheets. And it is comparatively stronger than 304 stainless steel, with superior stability & density
Types: Tek self tapping screws come with 2 different head types: Phillips wafer head & hex washer. Philips wafer head aids in fast installation, while washers provide strength & required stability
Versatility: Black Self-tapping stainless steel screws are suitable for mechanical tasks & quick fixation of household or office items, & mostly applied on wood, and plastic material
Package: Wafer & hex head self tapping screws set contain 420 pcs in a strong transparent box, with a tight lock, adjustable compartments, assorted sizes, and labelled accordingly, to easily find desired size