5/16-18 x 1 MACHINE SCREWS / Phillips / Flat Head Undercut / Steel / Zinc Fasteners coated with Stalgard PLUS

Fasteners coated with Stalgard PLUS typically show no red rust or other base metal corrosion on significant surfaces after 1500 hours of salt spray exposure in accordance with ASTM B117

Stalgard® Plus Coating provides improved corrosion resistance as well as enhanced galvanic compatibility in dissimilar metal applications

High hardness lead threads for tapping into steel and aluminum

Bi-Flex structural screws are bi-metal self-drilling tapping screws that provide the corrosion resistance of 300 series stainless steel and the efficiency of drill screws

5/16-18 x 1 MACHINE SCREWS / Phillips / Flat Head Undercut / Steel / Zinc Fasteners coated with Stalgard PLUS