Elco Con-Flex® LDC Screw Anchors 3/8 x 5 HWH w/ locking serration (25 Qty.)

Customer Reviews


: EMR265-025

: Fastener


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

Elco Con-Flex® LDC Screw Anchors 3/8 x 5 HWH w/ locking serration (25 Qty.)


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

Main Benefits:

  • Enhanced Ductility
  • Alloy Steel
  • Hex Washer Head with Locking Serrations
  • Silver Stalgard® Coating
Length 5 in.
Thread Length 3-1/2 in.
Drive System 9/16 in. Hex
Drill Bit Size 3/8 in.
Head Size 3/8 in. Diameter HWH
Screw Type ConFlex Large DIameter
USA/Import Made in USA
Material Alloy Steel
Head Style Hex Washer Head w/ Locking Serrations
Thread Style Double-Leaded
Finish Silver Stalgard® Coating
Tensile Yield 92000 KSI min.
Tensile Ultimate 120000 KSI min.
Inspection The head marking consists of an Elco logo and the fastener length in inches
Diameter 3/8 in.
Box Quantity 25
Weight 4 Lbs


Features and Benefits:

  • Flex Technology 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.