Tap-Flex Thread Forming Structural Screws

Solar Fastening Systems

Door/Locksmiths

CurtainWall/Window

Electrical Contractors

Anchors

Bucket Of Bolts!

Abrasives

Cutting Tools

Saw Blades

Fasteners

Firestop

Hand Tools

Metal Framing Systems

Power Tools

Safety Products

Security Products

Home >> Fasteners >> Tap-Flex Thread Forming Structural Screws

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 Specifications

• Diameters: 3/8", 1/2", and 5/8" • Lengths: 1-1/2", 2", and 2-1/2" • Head Style: Hex washer • Threads: E-Form five-lobe thread forming • Material: Alloy steel • Finish: Silver Stalgard® GB coating • Grade 5: meets ASTM A449 specifications (120 ksi strength)

More Product Information

Item ID	Description		Price
ELC ESU310	3/8" -16 x 1-1/2" Hex Washer Head Tap-Flex Structural E-Form Thread Forming Screw Stalgard Finish 500/Carton	available for order, usually ships within 3-5 business days	$210.50/BX

ELC ESU320	3/8" -16 x 2" Hex Washer Head Tap-Flex Structural E-Form Thread Forming Screw Stalgard Finish 500/Carton	"in stock": Shipped the same day if placed before 2:00pm EST	$247.50/BX

ELC ESU330	3/8" -16 x 2-1/2" Hex Washer Head Tap-Flex Structural E-Form Thread Forming Screw Stalgard Finish 500/Carton	available for order, usually ships within 3-5 business days	$278.50/BX

ELC ESU410	1/2" -13 x 1-1/2" Hex Washer Head Tap-Flex Structural E-Form Thread Forming Screw Stalgard Finish 250/Carton	available for order, usually ships within 3-5 business days	$387.25/BX

ELC ESU430	1/2" -13 x 2-1/2" Hex Washer Head Tap-Flex Structural E-Form Thread Forming Screw Stalgard Finish 250/Carton	available for order, usually ships within 3-5 business days	$494.75/BX

ELC ESU510	5/8" -11 x 1-1/2" Hex Washer Head Tap-Flex Structural E-Form Thread Forming Screw Stalgard Finish 250/Carton	available for order, usually ships within 3-5 business days	$533.25/BX

ELC ESU520	5/8" -11 x 2" Hex Washer Head Tap-Flex Structural E-Form Thread Forming Screw Stalgard Finish 150/Carton	available for order, usually ships within 3-5 business days	$370.65/BX

ELC ESU530	5/8" -11 x 2-1/2" Hex Washer Head Tap-Flex Structural E-Form Thread Forming Screw Stalgard Finish 150/Carton	available for order, usually ships within 3-5 business days	$421.05/BX