5/8-11 x 4 Elco Tap-Flex / Hex Washer Head / Steel / Stalgard (100ct) 8-15X2 1/4 Square Drive Trim

8-15X2 1/4 Square Drive Trim Head Drywall Screw Fine Thread Black Phosphate

2015 IBC/IRC and 2012 IBC/IRC

have a large flanged head

6-18X2 1/4 Square Drive Trim Head Drywall Screw Fine Thread Black Phosphate

Wood-to-steel connections

5/8-11 x 4 Elco Tap-Flex / Hex Washer Head / Steel / Stalgard (100ct) 8-15X2 1/4 Square Drive TrimTap 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