#12 x 1-1/2 Elco Dril-Flex / Hex Washer Head / Steel / Stalgard / QTY 2500 6X1 5/8 Phillips Recess Bugle

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

High-hardness point and lead threads for drilling and tapping

Material: Steel Black Oxide

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

#12 x 1-1/2 Elco Dril-Flex / Hex Washer Head / Steel / Stalgard / QTY 2500 6X1 5/8 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,