1/4-20 x 4 Elco Dril-Flex / Hex Washer Head / Steel / Stalgard / QTY 500 Window Walls/Glazing

Window Walls/Glazing

6-20X1 7/8 Phillips Bugle Head Full Thread Self Drilling Drywall Screw Zinc and Bake

8-15X1 1/4 Phillips Bugle Head Fine Thread Drywall Screw Black Phosphate

3/16" x 2-3/4" DeWALT blue concrete screws

1/4-20 x 4 Elco Dril-Flex / Hex Washer Head / Steel / Stalgard / QTY 500 Window Walls/GlazingDril 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,