Strong-Drive® SD CONNECTOR SS Screw
Product Details
The stainless-steel Strong-Drive SD Connector SS screw (SD SS) is specifically designed to replace nails in certain Simpson Strong-Tie® stainless-steel connectors. The load-rated SD SS screw has been tested and approved for use in many popular Simpson Strong-Tie products. In certain applications screws are easier and more convenient to install than nails, and the single-fastener load values achieved by the SD SS screw exceed those of 10d common nails. In addition, the Type 316 stainless steel provides excellent corrosion resistance appropriate for severe-exposure environments.
Key Features
- Specifically designed to replace nails in certain Simpson Strong-Tie stainless-steel connectors and is the only screw approved for that application
- The single-fastener load capacity of the #9 SD SS exceeds the capacity of a 10d common nail
- Ideal for use in connector applications where more control is desired or using a hammer is inconvenient installation
- 1/4" hex head with 0.370"-dia. integrated washer is stamped with the Simpson Strong-Tie "≠" sign and the fastener size for easy identification after installation
- Shank is specifically designed to match the fastener holes in Simpson Strong-Tie connectors
- Hex driver included
Applications
- The load-rated SD SS screw has been tested and approved for use in many popular Simpson Strong-Tie stainless-steel connector products. Refer to the Strong-Drive SD Connector SS screw table to see which fasteners are compatible with Simpson Strong-Tie connectors.
Related Links
- Fastening Systems Technical and Installation Notes
- General Corrosion Information
- Connectors Approved for Use with the Strong-Drive SD Connector screw
Catalog Pages
- Fastener Product Information: C-F-2023 (Fastening Systems), page 70
- Fastener Technical Data and Loads: C-F-2023TECHSUP, pages 68–69 and pages 203–205
Related Literature
Product Information Table
| Model No. | Coating/Material | Screw Size | Length (in.) | Head Diameter (in.) | Shank Diameter (in.) | Drive Type | Head Type | Thread Length (in.) | Point Type | Packaging Qty. |
|---|---|---|---|---|---|---|---|---|---|---|
| SD9112SSMB | Type 316 Stainless Steel | #9 | 1 1/2 | 0.370 | 0.130 | 1/4 in. Hex | Hex Head | 1 1/4 | Sharp Point | 3000 |
| SD9112SS-R100 | Type 316 Stainless Steel | #9 | 1 1/2 | 0.370 | 0.130 | 1/4 in. Hex | Hex Head | 1 1/4 | Sharp Point | 100 |
| SD9112SS-R500 | Type 316 Stainless Steel | #9 | 1 1/2 | 0.370 | 0.130 | 1/4 in. Hex | Hex Head | 1 1/4 | Sharp Point | 500 |
| SD9212SSMB | Type 316 Stainless Steel | #9 | 2 1/2 | 0.370 | 0.130 | 1/4 in. Hex | Hex Head | 1 1/4 | Sharp Point | 2000 |
| SD9212SS-R100 | Type 316 Stainless Steel | #9 | 2 1/2 | 0.370 | 0.130 | 1/4 in. Hex | Hex Head | 1 1/4 | Sharp Point | 100 |
| SD9212SS-R500 | Type 316 Stainless Steel | #9 | 2 1/2 | 0.370 | 0.130 | 1/4 in. Hex | Hex Head | 1 1/4 | Sharp Point | 500 |
Load Tables
SD Connector SS Screw — Allowable Shear Loads for Wood Connections
| Size (in.) | Model No. | Thread Length (in.) | Reference DFL/SP Allowable Shear Loads (lb.) | Reference SPF/HF Allowable Shear Loads (lb.) | ||||
|---|---|---|---|---|---|---|---|---|
| Wood Side Plate Thickness (in.) | Wood Side Plate Thickness (in.) | |||||||
| 15/32 - 1/2 | 23/32 - 3/4 | 1 1/2 | 15/32 - 1/2 | 21/32 - 3/4 | 1 1/2 | |||
| #9 x 1 1/2 | SD9112SS | 1.0 | 105 | — | — | 93 | — | — |
| #9 x 2 1/2 | SD9212SS | 1.0 | 118 | 133 | 130 | 99 | 94 | 109 |
- Allowable loads are shown at the wood load duration factor of CD = 1.00. Loads may be increased for load duration per the building code up to a CD = 1.60.
- The 15/32" and 23/32" side members must be plywood or OSB with minimum equivalent specific gravities of 0.50 for DFL and SP design values, and 0.42 for SPF and HF design values. See NDS, Table 12.3.3B for specific WSP grades and associated equivalent specific gravities.
- Loads are based on connections with main members of DFL/SP or SPF/HF and side members as shown and described in table note 2. Screws shall be installed normal to the surface of the wood members.
- For minimum fastener spacing requirements for both side and main members, see the Spacing Requirements Figure and Table below.
SD Connector SS Screw — Allowable Withdrawal Loads
| Size (in.) | Model No. | Thread Length (in.) | Head Diameter (in.) | Allowable withdrawal design values, W (lb. / in.) | |
|---|---|---|---|---|---|
| DFL and SP Main Member | SPF and HF Main Member | ||||
| #9 x 1 1/2 | SD9112SS | 1.0 | 0.37 | 173 | 122 |
| #9 x 2 1/2 | SD9212SS | 173 | 122 | ||
- The tabulated reference allowable withdrawal value, W, is in pounds per inch of the thread penetration into the side grain of the main member.
- Tabulated reference allowable withdrawal value, W, must be multiplied by all applicable adjustment factors from the NDS as referenced in the IBC or IRC.
- Thread penetration length is that portion held in the main member, including the screw tip.
- For connections with 15/32" thick plywood or OSB side members, allowable withdrawal design values, W, must be limited by the head pull-through design value of 130 lb.
SD Connector SS Screw Spacing Requirements
- For SD9SS screws subject to axial loading only, use the following minimum dimensions: end distance = 1 3/4", edge distance = 3/4", spacing parallel to grain = 1 1/4", spacing perpendicular to grain = 3/4".
SD Connector SS Screw — Allowable Shear Loads — Steel/Stainless-Steel Side Plate
| Size (in.) | Model No. | Thread Length (in.) | Reference Allowable Shear Loads with Stainless-Steel Side Plates (lb.) | |
|---|---|---|---|---|
| DFL and SP Main Member | SPF and HF Main Member | |||
| #9 x 1 1/2 | SD9112SS | 1.0 | 171 | 112 |
| #9 x 2 1/2 | SD9212SS | 200 | 112 | |
- Loads are given for CD = 1.00 and may be increased for load duration per the building code to CD = 1.60.
- Stainless-steel side-plate thickness is 33 to 100 mil (20 –12 ga.)
Code Reports & Compliance
Drawings
| DWG | DXF | RFA | IFC | SAT | |||
|---|---|---|---|---|---|---|---|
