1/4-20 x 6 Elco Bi-Flex / Hex Washer Head / 18-8 Stainless / Stalgard / QTY 250 and pour concrete

and pour concrete

6-18X1 1/4 Square Drive Trim Head Drywall Screw Fine Thread Black Phosphate

8X1 1/4 Phillips Modified Truss Head Fine Thread Drywall Screw Fully Threaded Zinc

E-Form® thread profile overcomes friction build-up and reduces drive torque

1/4-20 x 6 Elco Bi-Flex / Hex Washer Head / 18-8 Stainless / Stalgard / QTY 250 and pour concreteBi 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