Elco - Con-Flex - 1/2" Diameter HFH, Hex Washer Head with Locking Serration (50 Per Box) (Click for Sizes/Weight)

Customer Reviews


: EMR320-050

: Fastener


: Conflex Large Diameter Concrete Screws, ELCO Construction Fasteners & Screws

Elco ConFlex Masonry Screws

Enhanced ductility allows use in demanding exterior applications
Con-Flex Õ Â masonry screws are engineered to provide high pull-out and shear values with virtual immunity to brittle failures.


  • ConFlex 3/8" and 1/2" diameter threaded fasteners engineered by Elco Construction Products provide high performance in masonry and concrete, even in exterior applications. Hex washer head with locking serrations prevents back-out. Unique Flex Technology heat treat provides ductility and strength to prevent brittle failures. Silver Stalgard corrosion-resistant coating standard; white and bronze Stalgard available in selected sizes. Install with standard ANSI drill bits.

  • Features and Benefits
    • Flex Technology Õ Â heat treat allows virtual immunity to brittle failures, allowing use in exterior applications
    • Locking serrations under the head provide back-out resistance
    • Hardened tip ensures efficient tapping into concrete
    • Head markings allow easy inspection
    • Install with standard ANSI bits

    Returns Policy

    You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

    You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

    If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


    We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

    When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

    Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.