Simpson Strong Tie HDU Holdown with Screws

The HDU is designed for use in shearwalls and braced-wall panels, as well as other lateral applications in wood construction. The HDU uses Strong-Drive® SDS Heavy-Duty Connector screws which install easily, reduce fastener slip and provide a greater net section than bolts.

Key Features

  • Strong-Drive SDS Heavy-Duty Connector screws are supplied with the holdown to ensure proper fasteners are used
  • Predeflected seat eliminating deflection under load
  • No stud bolts to countersink at openings


  • See table


  • Galvanized


  • See General Notes for Holdowns and Tension Ties.
  • The HDU requires no additional washer.
  • Strong-Drive SDS Heavy-Duty Connector screws install best with a low-speed, high-torque drill equipped with a 3/8″ hex-head driver.
  • Fasteners and crescent washer are included with the holdowns. For replacements, order part no. SDS25212-HDU_. (Fill in the size needed, e.g., HDU2.)

ImageModel No.PriceQuantityAdd to CartWishlist ***
Model No.: HDU2-SDS2.5Price: $25.45
Model No.: HDU4-SDS2.5Price: $23.72
Model No.: HDU5-SDS2.5Price: $35.55
Model No.: HDU8-SDS2.5Price: $50.48
Model No.: HDU11-SDS2.5Price: $61.63
Model No.: HDU14-SDS2.5Price: $71.95

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