Simpson Strong-Tie HHDQ11-SDS2.5 (15-1/8 in.) Quick-Install Heavy Holdown with SDS Screws
Simpson HHDQ11-SDS2.5 Description
The Simpson HHDQ11-SDS2.5 Heavy Holdown is designed for high loads and ease of installation, featuring Strong-Drive SDS screws for secure fastening and minimized deflection.
Simpson HHDQ11-SDS2.5 Includes
- (1) Heavy Holdown
- (24) 1/4″ x 2 1/2″ Strong-Drive SDS Heavy-Duty Connector Screws
Simpson HHDQ11-SDS2.5 Features
- Strong-Drive SDS Heavy-Duty Connector screws are supplied with the holdowns to ensure proper fasteners are used
- Screws may be installed either flush or raised off the mudsill without a reduction in load value
- No stud bolts to countersink at openings
- Gray paint finish for corrosion resistance
- Designed for high loads and ease of installation
Simpson HHDQ11-SDS2.5 Applications
- Mass Timber / Cross-Laminated Timber
- High-load structural applications
- Wood construction requiring secure holdown installation
Simpson HHDQ11-SDS2.5 Installation Overview
- Install Strong-Drive SDS Heavy-Duty Connector screws using a low-speed, high-torque drill equipped with a 3/8″ hex-head driver
- No additional washer is required
- Ensure proper alignment and positioning of the holdown
- Follow manufacturer guidelines for fastener installation
Simpson HHDQ11-SDS2.5 Specifications
| Material | Body: 7 gauge, washer: 1/2″ plate |
| Finish | Gray Paint |
| Height | 15 1/8″ |
| Fasteners Required | (24) 1/4″ x 2 1/2″ |
| For Treated Lumber | No |
NOTE: The correct fasteners installed in the correct position must be used to achieve published load values
