ELCO® Hex Washer Tap-Flex Thread Forming Structural Screw Stalgard
In stock
Tap-Flex structural fasteners are thread-forming screws that are dual heat treated, self-tapping fasteners that provide the strength, ductility, and resistance to embrittlement failures required in critical curtain wall and dissimilar metal applications. Tap-Flex fasteners are engineered to replace nut and bolt assemblies and Taptite® fasteners commonly used in building construction.
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FEATURES
- Hex washer Head with underhead serrations
- E-Form five-lobe thread forming overcomes friction build-up and reduces drive torque
- Grade 5: Meets ASTM A449 specifications (120 ksi strength)
- Silver Stalgard® SUB coating provides 2000 hours of salt spray resistance (per ASTM B117)
- Eliminates thread-tapping operations
- Roll forms own work-hardened thread to resist loosening cause by vibration or thermal changes
- Well-suited for metal applications such as steel and aluminum
- Flex Technology heat treat provides required strength and ductility
- Virtually immune to delayed embrittlement failures
- Accept standard nuts and washers if required
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