1/4-20 x 4 Elco Dril-Flex / Phillips / Flat Head / Steel / Stalgard / QTY 500 6X1 1/2 Phillips Recess Bugle

6X1 1/2 Phillips Recess Bugle Head Coarse Thread Drywall Screw Zinc Yellow

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

8X1 5/8 Phillips Modified Truss Head Fine Thread Drywall Screw Fully Threaded Zinc

6X1 1/4 Phillips Recess Bugle Head Coarse Thread Drywall Screw Particle Board Zinc

1/4-20 x 4 Elco Dril-Flex / Phillips / Flat Head / Steel / Stalgard / QTY 500 6X1 1/2 Phillips Recess BugleDril Flex Structural Screws are dual heat treated self drilling tapping screws that provide the strength, ductility and resistance to embrittlement required for critical applications. Features & Specs High hardness point and lead threads for drilling and tapping Stalgard and Stalgard SUB Coatings provide improved corrosion resistance as well as enhanced galvanic compatibility in dissimilar metal applications, including those involving aluminum,