1/2-13 x 1-1/2 Elco Tap-Flex / Hex Washer Head / Steel / Stalgard (250ct) The parts take multiple sizes

The parts take multiple sizes of threaded rod

Water pipes (plumbing)

8-15X2 1/2 Square Drive Trim Head Drywall Screw Fine Thread Black Phosphate

6X1 1/4 Phillips Bugle Head Coarse Thread Drywall Screw Black Phosphate Particle Board

Brand part # DFM12730

1/2-13 x 1-1/2 Elco Tap-Flex / Hex Washer Head / Steel / Stalgard (250ct) The parts take multiple sizesTap Flex Thread Forming Structural Screws are thread forming, dual heat treated self tapping fasteners that provide the strength, ductlity, and resistance to embrittlement failures required in critical curtain wall and dissimilar metal applications. Tap Flex fasteners are designed to offer a replacement option for traditional nut and bolt assemblies. These fasteners provide an excellent solution for blind connections. The patented E Form segmented