5/16-24 x 2 Elco Dril-Flex / Hex Washer Head / Steel / Stalgard / QTY 1000 8X3 Phillips Bugle Head Coarse

8X3 Phillips Bugle Head Coarse Thread Drywall Screw Black Phosphate Particle Board

Blue plastic ring acts as insert locator when forms are removed

6X1 5/8 Phillips Recess Bugle Head Coarse Thread Drywall Screw Zinc Yellow

Patented grooved insert body prevents component separation even if the flute is broken off prior to pour

5/16-24 x 2 Elco Dril-Flex / Hex Washer Head / Steel / Stalgard / QTY 1000 8X3 Phillips Bugle Head CoarseDril 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,