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3/8-16 x 2-1/2" Tap-Flex Hex Washer Head Thread-Forming Structural Screws - Pack of 125
Tap-Flex: Increased thread engagement with strength and ductility
These thread-forming screws 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 screws are threadformers with the patent-pending E-form segmented thread profile. This design improves both installation and in-place performance:
- Decreases thread-forming torque, easing starting and placement
- Overcomes friction build-up and reduces drive torque
- Increases thread engagement, so it resists back-out and loosening caused by vibration or thermal changes
Features and Benefits
- Eliminates thread-tapping operations
- E-Form configuration overcomes friction build-up and reduces drive torque
- Roll forms own work-hardened thread to resist loosening cause by vibration or thermal changes
- Provides enhanced pull-out performance
- 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
- Stalgard GB coating provides 1000 hours of salt spray resistance (per ASTM B117)
- Accept standard nuts and washers if required
Part # 42237C250TFSG