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Durelloy Threaded Bar is a precision rolled thread onto a heat treated alloy conforming to ASTM A 193-B-7 specifications. Durelloy Threaded Bar is delivered in a Brinell hardness of 280–300 for greater thread strength and wear resistance. The rolled threads guarantee strength and perfect fit for shock-resistant applications subject to high pressure, high temperatures, and repetitive tortional stresses.

Features And Advantages

  • Immediate usage, no machining required
  • High tensile strength
  • Precision rolled threads
  • Heat treated to assure long, useful life
  • All bars stocked in 12-foot lengths
  • Conforms to ASTM specifications
  • Eliminates multiple stocking


  • Studs
  • Anchor bolts
  • High compression bolts
  • Adjustment bolts
  • Pressure vessels
  • Stud pullers
  • Machine anchors
  • Positioning rods


  • Unified Course
  • SAE National Fine
  • Unified 8 Thread
  • Metric
  • Acme
  • Left Hand
  • ASTM A320 L7

Typical Mechanical Properties

Available Sizes For Immediate Shipment