Product Overview
HDUE3-SDS3HDG 8-11/16 in. Predeflected Holdown
The patent-pending HDUE holdown is designed to meet the increased design demands of today’s residential wood structures, including three-story homes with more windows and limited shearwall space. Offering higher load capacities than previous models, the HDUE serves as an easy one-to-one replacement for our industry-leading HDU. This holdown provides exceptional overturning resistance for shearwalls, braced wall panels and other lateral-force-resisting applications in wood construction.
The HDUE features a predeflected seat that reduces deflection under load, an overlapping back plate for increased strength and optimized screw patterns to prevent splitting. It's tested to ICC-ES AC155 standards. The higher-capacity models combine fasteners in both shear and tension while reducing the number of screws required. The HDUE installs with Strong-Drive® SDS Heavy-Duty Connector screws, minimizing fastener slip and preserving the wood post’s net section better than bolts. Available in multiple sizes, the HDUE accommodates a wide range of load requirements.
- Predeflected seat reduces deflection under load
- Angled fastening in the four larger sizes engages the screws in tension for higher load capacity, reducing the number of screws required
- Angled fastening tabs in the four larger sizes help drive the fastener at a 45° angle, and offset holes on the second back plate block the fastener from being driven straight
- Overlapping back plate increases fastener strength and shear values, helping prevent post splitting
- Optimized screw patterns reduce splitting at the end of the post and maximize individual fastener capacity
- Installs with Strong‑Drive SDS Heavy‑Duty Connector screws
- Extruded seat adds a greater cross-sectional steel section for added strength
- Teardrop holes allow higher and more even distribution of load
- HDUE3/HDUE5/HDUE7 – 14 ga.; HDUE9/HDUE13 – 12 ga.; HDUE17 – 10 ga.
- G90 and HDG
- Set the correct size cast-in-place anchor bolt
- Place the HDUE holdown over the anchor bolt
For HDUE3 and HDUE5:
- Install all Strong-Drive SDS Heavy-Duty Connector Screws (included) perpendicular into the wood member
For HDUE7, HDUE9, HDUE13, and HDUE17:
- Install at least one perpendicular Strong-Drive SDS Heavy-Duty Connector Screw (included) into the wood member to set the holdown
- Install the remaining screws, including both perpendicular and angled screws, into all holes (both round and tabbed) in the wood member
- Place and orientate the crescent washer over the anchor bolt
- Anchor bolt nut should be finger tight plus 1/3 to 1/2 turn with a hand wrench
