1/4-20 x 2-13/16 Elco Bi-Flex / Phillips / Flat Head / 18-8 Stainless / Stalgard / QTY 1000 Serrations on underside of hex

Serrations on underside of hex washer head lock against the fixture

1/4" x 2-3/4" DeWALT blue concrete screws

DeWALT SKU-DFMEMF430-The Crete-Flex anchor is a 410 stainless steel screw anchor for light to medium duty applications in concrete and masonry block base materials

6-18X2 1/4 Phillips Bugle Head Fine Thread Drywall Screw Black Phosphate

1/4-20 x 2-13/16 Elco Bi-Flex / Phillips / Flat Head / 18-8 Stainless / Stalgard / QTY 1000 Serrations on underside of hexBi 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. Bi Flex screws are suitable for use in both steel and aluminum. Features & Specs High strength, ductility and reliability Higher corrosion resistance compared with carbon steel and 410 series stainless steel fasteners 18 8 stainless compatible with pressure treated lumber Immune to