The Simpson S/HD series of holdowns are designed for installation with either screws or bolts into the studs or column. The S/HDS series installs with #14 screws and has been designed to utilize fewer fasteners to reduce installation time. The S/HDB series is ideal for bolt-on applications where the cold-formed stud manufacturer can pre-punch the bolt holes.

Installation:

• Use all specified fasteners.
• Anchor bolt washer is not required.
• Standard washers are required on stud bolt nuts for model S/HDB.
• Thin wall socket (OD=2″ maximum) is required for S/HD15 to tighten the 1″ anchor bolt.
• Stud bolts use A307.
• Boundary members (back-to-back studs) design shall be by Designer.
• S/HDS and S/HDB holdowns can be welded per Designers recommendation and specification. To tie back-to-back stud members together, the Designer must determine the fasteners required to bind members t