1/4-20 x 4 Elco Bi-Flex / Phillips / Flat Head Undercut / 18-8 Stainless / Stalgard / QTY 500 10X3/4 Phillips Bugle Head Coarse

10X3/4 Phillips Bugle Head Coarse Thread Drywall Screw Black Phosphate Particle Board

resulting in a fastener with increased ductility having no significant susceptibility to Hydrogen-Assisted Stress Corrosion Cracking (HASCC)

Plastic ring creates countersunk recess to keep threads clean from pour residue

10-14X4 1/2 Phillips Bugle Head Fine Thread Drywall Screw Black Phosphate

Metric Phil Flat 7

1/4-20 x 4 Elco Bi-Flex / Phillips / Flat Head Undercut / 18-8 Stainless / Stalgard / QTY 500 10X3/4 Phillips Bugle Head CoarseBi 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