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Dril-Flex® Structural Drill Screws

Precision-engineered and dual heat treated drill screws provide the strength, ductility and resistance to embrittlement required for critical applications.

Features and benefits

  • High-hardness points and lead threads for drilling and tapping
  • Lower-hardness in load-bearing threads for ductility
  • Virtually immune to delayed embrittlement failures
  • Stalgard® coating provides 800 hours of salt spray resistance (per ASTM B117)


  • Diameters: #10 to 5/16"
  • Lengths: 3/4" to 3-3/8"
  • Head Styles: Hex washer and undercut flat
  • Drive Systems: Hex and phillips
  • Point Types: #3 and #4
  • Material: Alloy steel
  • Finish: Silver Stalgard® coating
  • Head Marking: Elco® logo in a raised circle