5/8-11 x 4 Elco Tap-Flex / Hex Washer Head / Steel / Stalgard (100ct) 8X1 7/8 Phillips Modified Truss

8X1 7/8 Phillips Modified Truss Head Fine Thread Drywall Screw Fully Threaded Zinc

Brand part # DFM12774

Solar panel systems

Brand part # DFM12734

Closed bottom versions (the cone is sealed to prevent dirt from getting in) are available also in selected sizes

5/8-11 x 4 Elco Tap-Flex / Hex Washer Head / Steel / Stalgard (100ct) 8X1 7/8 Phillips Modified TrussTap 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