1/4-20 x 4 Elco Dril-Flex / Phillips / Flat Head / Steel / Stalgard / QTY 500 8X1 5/8 Phillips Modified Truss

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

Crete-Flex anchors feature a Stalgard coating and provide enhanced corrosion resistance over carbon steel fasteners

Material: 18-8 Stainless w/Black Oxide Finish

dual heat treated self-tapping fasteners that provide the strength

Plastic sleeve provides guidance to align threaded rod with matching internal female threads

1/4-20 x 4 Elco Dril-Flex / Phillips / Flat Head / Steel / Stalgard / QTY 500 8X1 5/8 Phillips Modified TrussDril 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,