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1/4"-14 x 1" Hex Washer Head Dril-Flex TEK Screw

Mfg#: 654AF816
Product#: 654AF816
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Dril-Flex® fasteners are specially designed and processed to help prevent hydrogen-induced brittle failures. Each fastener undergoes a unique dual-hardening process to ensure the optimal combination of ductility and hardness required for maximum performance in the field. Testing of this product, in accordance with ASTM standards, has proven that Dril-Flex fasteners provide the same resistance to hydrogen-assisted cracking (HAC) as a Grade 5 fastener


  • Corrosion resistance superior to zinc or cadmium based finishes
  • Lower-hardness (HRC 28 – 34) load-bearing threads
  • Complies with Buy America Act
  • Higher hardness (HRC 52 min) point and lead threads
  • Ensures consistent, reliable drilling and tapping
  • Can be used in applications with dissimilar materials
  • Eliminates separate drilling and tapping operations
  • Provides the same high resistance to hydrogen-assisted failure as a Grade 5 fastener


  • Point Type: Tek
  • Length Under Head: 1 in
  • Material: Carbon Steel
  • Screw Size: 0.25-14 in
  • Standards: ASTM Specified, ICBO Evaluation
  • Color: Silver
  • Finish: Stalgard
  • Head Style: Hexagonal Washer
  • Thread Type: Self-Tapping
  • Material Specification: ASTM B117
  • Special Features: 0.210 in Drilling Capacity
  • Usage: For Metal Panels to Steel Structural's