10-24 x 1-1/4 Elco Dril-Flex / Phillips / Wafer Head / Steel / Stalgard / QTY 5000 Bi-Flex structural screws are bi-metal

Bi-Flex structural screws are bi-metal self-drilling tapping screws that provide the corrosion resistance of 300 series stainless steel and the efficiency of drill screws

10X4 Phillips Bugle Head Coarse Thread Drywall Screw Black Phosphate Particle Board

have a large flanged head

Tested in accordance with ICC-ES AC491 for use in Aluminum

Uses 3/16 in and 1/4 in tappers

10-24 x 1-1/4 Elco Dril-Flex / Phillips / Wafer Head / Steel / Stalgard / QTY 5000 Bi-Flex structural screws are bi-metalDril 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,