Catalogue: Simpson Strong‑Tie® Timber Construction ... · 2. Bending yield strength is based on testing per ASTM F1575 and is the average 5% offset value.

92 | Simpson Strong‑Tie® Timber Construction Connectors C‑C‑AU16 © 2016 Simpson Strong‑Tie Company Inc.

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Strong-Drive ® SD CONNECTOR Screw

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RSDesigned to replace nails in certain products, the load‑rated Strong‑Drive® SD Connector

screw has been tested and approved for use in many popular Simpson Strong‑Tie® connectors. It is great for use in tight spaces where using a hammer is inconvenient.

The #8 x 32mm SD Connector wafer‑head screw is ideal for miscellaneous fastening applications. The needle point ensures fast starts and deep #2 Phillips drive reduces cam‑out and stripping.

Material: Heat‑treated carbon steel

Finish: SD8x1.25—Electro Galvanised; SD—Mechanically galvanised (ASTM B695 Class 55)

Warning: Industry studies show that hardened fasteners can experience performance problems in wet or corrosive environments. Accordingly, the SD8x1.25 should be used in dry, interior, and noncorrosive environments only.

Mechanically galvanized coating meets ASTM B695 Class 55, is recommended for use with certain preservative‑treated woods and recognized as an alternate to hot‑dip galvanized in ESR‑3046

Shank size optimised and tested for use with Simpson Strong‑Tie connectors

1/4" washer head stamped with No‑Equal symbol and length for easy inspection

Sharp point for faster starts

Wafer‑Head ScrewSD8x1.25 is a general timber‑to‑timber fastener, used in non‑structural applications

Strong‑Drive® Structural Fasteners

C‑C‑AU16 © 2016 Simpson Strong‑Tie Company Inc. Simpson Strong‑Tie® Timber Construction Connectors | 93

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Strong‑Drive SD Connector Screw DimensionsModel No. Nominal Size (G) Shank Diameter (mm) Length (mm) Thread Length (mm) Hex Drive (mm)

SD9112 9 3.30 38

25 6.35SD9212 63SD10112 10 4.04 38SD10212 63

1. Length is measured from point to bottom of washer head.

Strong‑Drive SD Connector Screw Strength PropertiesModel No. Tensile Strength (kN) Shear Strength (kN) Bending Yield Strength (MPa)

SD9112 6.81 5.671300SD9212

SD10112 7.41 5.94SD102121. Tensile and shear strengths are average ultimate properties.2. Bending yield strength is based on testing per ASTM F1575 and is the average 5% offset value.

Characteristic Loads for SD Connector Screws Used in Metal‑to‑Timber Connections

Model No. Nominal Size Thread Length (mm)JD4 Characteristic Loads JD5 Characteristic Loads

Shear, QkL (N) Steel side plates 1.0–2.7mm Withdrawal Qkw (N/mm) Shear, QkL (N) Steel side

plates 1.0–2.7mm Withdrawal Qkw (N/mm)

SD9112 #9 x 38

25

2535

1011655

71SD9212 #9 x 63 2695SD10112 #10 x 38 2520 2045SD10212 #10 x 63 3220 2450

1. Withdrawal and pull‑through characteristic values are in N/mm of thread penetration into the main member and side member, respectively.2. Face and edge installations are at 90 degrees to the grain and end installation is along the grain. 3. Withdrawal and Pull‑through loads shall be checked against tension strength in design.

Connection Geometry for the SD Connector Screws Based on the Timber Main MemberSpacing Type Loading Orientation SD9 and SD10 Screws (mm)End distance Along (loaded away from end) and across grain 50Edge distance Along or across grain 25‑ Along grain — 40‑ Across grain — 20

Between staggered rows — 13Between fasteners in a row — 50

1. Edge distances, end distances, and spacing of screws shall be sufficient to prevent splitting of the timber or as required in this table, or when applicable, as recommended by the structural composite timber manufacturer, whichever is more restrictive.

2. Edge and end distances based on AS 1720.1, Table 4.8.

SD10(SD9 similar)

U.S. Patent 7,101,113

Identification on all SDS screw heads (SD10212 shown)