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HDQ8/HHDQ Holdown
The HHDQ series of holdowns combines low deflection and high loads with ease of installation. The unique seat design of the HDQ8 greatly minimizes deflection under load. Both styles of holdown employ the Strong-Drive® SDS screws which install easily, reduce fastener slip and provide a greater net section when compared to bolts. They may be installed either flush or raised off the mudsill without a reduction in load value.
Special Features:
Material: HDQ8—7 gauge; HHDQ—Body: 7 gauge, washer: 1/2" plate
Finish: HDQ8—Galvanized; HHDQ—Simpson Strong-Tie® gray paint
Installation:
These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.
| Legacy Reports | |||||||
| IAPMO UES ER | ICC-ES ESR | CITY OF LOS ANGELES | STATE OF FLORIDA | ICC-ES NER | ICC-ES ER | ICC-ES ES | |
| HDQ8-SDS3 | ESR-2330 / ESR-2523 * | RR25720 | FL10441 | ||||
| HHDQ | See specific model numbers for code listings. | ||||||
| HHDQ11-SDS2.5 | ESR-2330 / ESR-2523 * | RR25720 | FL10441 | ||||
| HHDQ14-SDS2.5 | ESR-2330 / ESR-2523 * | RR25720 | FL10441 | ||||
* ESR-2523 is an Index of many of Simpson Strong-Tie Stamped and Welded Cold-formed Steel Products for Wood or Cold-formed Steel Construction
| ORTHOGRAPHIC | PERSPECTIVE | |
| HHDQ | None for this model | None for this model |
| HHDQ11 |
HHDQ11: DWG | DXF
HHDQ11 front view: DWG | DXF HHDQ11 left view: DWG | DXF HHDQ11 right view: DWG | DXF HHDQ11 top view: DWG | DXF |
None for this model |
| HHDQ14 |
HHDQ14: DWG | DXF
HHDQ14 front view: DWG | DXF HHDQ14 left view: DWG | DXF HHDQ14 right view: DWG | DXF HHDQ14 top view: DWG | DXF |
None for this model |
| HHDQ8 | None for this model | None for this model |
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