• 1.5 inch Stainless steel SD connector screw with hex head and threading
  • 2.5 inch Stainless steel SD connector screw with hex head and threading
    • 1.5 inch Stainless steel SD connector screw with hex head and threading
    • 2.5 inch Stainless steel SD connector screw with hex head and threading

    SD Connector SS Screw

    Vendor: Simpson Strong-Tie Type: Structural Screws
    4.5' (1201 Reviews)
    SKU: SD9112SS-R100
    $62.00
    Shipping calculated at checkout.
    Size: #9
    Length: 1 1/2"
    Box QTY: 100
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    • 1.5 inch Stainless steel SD connector screw with hex head and threading
    • 2.5 inch Stainless steel SD connector screw with hex head and threading
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    The stainless-steel Strong-Drive® SD Connector SS screw is made to replace nails in specific Simpson Strong-Tie® stainless-steel connectors. Tested and approved for load performance, this screw delivers superior single-fastener load values that exceed those of 10d common nails. Made from Type 316 stainless steel, it offers exceptional corrosion resistance for use in severe-exposure conditions. The SD SS provides an easier, more controlled installation compared to nails, making it a great choice for professionals who value both efficiency and long-term reliability in high corrosion environments.

    Key Features

    • Designed to replace nails in specific Simpson Strong-Tie® stainless-steel connectors - the only screw approved for that application.
    • #9 SD SS single-fastener load capacity exceeds that of a 10d common nail.
    • Provides greater installation control and convenience compared to hammer-driven nails.
    • 1/4" hex head with 0.370"-diameter integrated washer, stamped with the Simpson Strong-Tie “≠” logo and size for easy post-install identification.
    • Shank precisely matches connector fastener holes for optimal fit.
    Specifications

    Coating/Material: 316 Grade Stainless Steel
    Screw Size:     #9
    Drive Type:     ¼" Hex
    Head Type:     Hex Head
    Point Type:     Sharp Point
    Product Includes
    • Stainless steel SD connector screws (quantity varies by SKU).
    Applications
    • Structural connections in decks, pergolas, and outdoor platforms
    • Marine and coastal construction where corrosion resistance is needed
    • Securing hardware in docks, piers, and boardwalks
    • Exterior framing exposed to moisture, humidity, or salt air.
    • Installing hold-downs, ties, and reinforcement hardware.

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    TECHNICAL SPECS

    Allowable Shear Loads for Wood Connections

    Table showing shear load capacities for Simpson Strong Tie SD connector stainless steel screws.

    1.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.

    2. 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.

    3. 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.

    4. For minimum fastener spacing requirements for both side and main members, see the Spacing Requirements Figure and Table below.

    Allowable Withdrawal Loads

    Table showing allowable withdrawal loads for DFL and SPF members.

    1. The tabulated reference allowable withdrawal value, W, is in pounds per inch of the thread penetration into the side grain of the main member.

    2. Tabulated reference allowable withdrawal value, W, must be multiplied by all applicable adjustment factors from the NDS as referenced in the IBC or IRC.

    3. Thread penetration length is that portion held in the main member, including the screw tip.

    4. 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.

    Screw Spacing Requirements

    Table with construction specifications for load to grain distances and spacings for Simpson Strong Tie SD connector stainless steel screws.

    1. 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".

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    Diagram showing screw spacing requirements for Simpson Strong Tie SD connector stainless steel screws.

    Allowable Shear Loads | Steel/Stainless-Steel Side Plate

    Table showing shear load capacities for different sizes of steel members with stainless steel side plates.

    1. Loads are given for CD = 1.00 and may be increased for load duration per the building code to CD = 1.60.

    2. Stainless-steel side-plate thickness is 33 to 100 mil (20 –12 ga.)