SD Strong-Drive Connector SS Screw

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Product Details

SD9 SS Connector SS Screw

SD9 SS Illustration

SD9112SS-R100

SD9212SS-R100

The load‑rated Strong‑Drive^® SD Connector SS screw (SD SS) is a Type 316 stainless steel fastener designed, tested and approved for use with certain Simpson Strong‑Tie^® stainless steel connectors. Type 316 stainless steel provides excellent protection in severe corrosion environments.

The SD SS screws have a 1/4" (6.35mm) hex head with a large integrated washer, and are stamped with the Simpson Strong‑Tie “≠” logo and fastener size for easy identification after installation.

Material & Finish

316 Stainless Steel

Features & Benefits

A premium fastener for a premium connection
The load rated SD SS screw has been tested and approved for use in Simpson Strong-Tie stainless steel connectors
Shank is specifically designed to match the fastener holes in Simpson Strong-Tie connectors
Screws are easier and more convenient to install than nails in certain applications where using a hammer is inconvenient
Stainless steel products are an investment in your outdoor structures. When you are ready to repair, remodel or replace your structure, SD SS screws are easy to remove, inspect, and install when compared with nailed connections
1/4” (6.35mm) hex drive bit included

Applications

Simpson Strong‑Tie^® stainless steel connectors

Model No. Table

Specifications - Hand-drive

Model No.	Size	Thread	Point	Material & Finish	Box Qty	Drive Size
PLEASE NOTE: Pre-drilling and countersink may be necessary at ends, butt joints, and on applications where denser material is used. Follow the board manufacturer’s recommendation where applicable. WARNINGS: Always wear PPE during installation. Corrosive environments, exposure to water, salt air, or chemicals (including some wood preservatives) may cause early failure.
SD9112SS-R100	#9 x 38mm	Serrated Threads	Sharp Point	316 Stainless Steel	100	1/4” Hex Head
SD9212SS-R100	#9 x 64mm	Serrated Threads	Sharp Point	316 Stainless Steel	100	1/4” Hex Head

Table 1. Model numbers, markings, dimensions, and basic properties for the SD Connector SS screws

Model No.	Head Marking (##)	Screw Length (mm)	Thread Length (mm)	Diameter (mm)			Fastener Strength
				Shank	Major	Minor	Bending Yield Strength (MPa)	Tension (kN)	Shear (kN)
SD9112SS	1.5	38	25.4	3.5	4.3	3.0	1070	3.5	2.9
SD9212SS	2.5	64
Fastener length is measured from the underside of the head to the point. Thread length includes the point. Bending yield strength testing followed ASTM A F1575 and is based on minor thread diameter. Characteristic bending yield strength determined following EN14358. Tension and shear properties are based on 0.5 of the average load for screws tested in tension and shear, respectively. Shear strength is shear through the threads.

Table 2. Characteristic Capacity (Qk) for single SD SS Screws Single Shear Connections (Type 1) – Seasoned Timber for Joint Groups JD4 and JD5 and Wood Structural Panels (WSP)

Model No.	Screw Length (mm)	Thread Length (mm)	Characteristic Shear Capacity - JD4 (N)			Characteristic Shear Capacity - JD5 (N)
			Timber Side Member Thickness (mm)			Timber Side Member Thickness (mm)
			11.9-12.7 (WSP)	18.3-19.1 (WSP)	35	11.9-12.7 (WSP)	18.3-19.1 (WSP)	35
SD9112SS	38	25.4	1525	-	-	1350	-	-
SD9212SS	64	25.4	1615	1810	1920	1340	1280	1830
Main and side members shall have densities representative of JD4 and JD5, 550 kg/m³ and 500 kg/m³, respectively. Tabulated characteristic lateral capacities are for normal duration of load. Screws shall be installed normal to the surface of the timber member.

Table 3. Characteristic Capacity (Qk) for Single SD SS Screws Single Shear Connection (Type 1) - Steel-to-Timber for Seasoned Timber for Joint Groups JD4 and JD5

Model No.	Screw Length (mm)	Thread Length (mm)	Characteristic Shear Strength 1-mm Steel-to-Timber (N)
			JD4	JD5
SD9112SS	38	25.4	1665	1080
SD9212SS	64		1970	1080
The main members shall have densities representative of JD4 and JD5, 550 kg/m³ and 500 kg/m³, respectively. Tabulated characteristic lateral capacities are for normal duration of load. Screws shall be installed normal to the surface of the timber member.

Table 4. Characteristic Capacity (Qk) for Single SD SS Screws Withdrawal Connections (Type 2) – Seasoned Timber for Joint Groups JD4 and JD5

Model No.	Screw Length (mm)	Thread Length (mm)	Characteristic Withdrawal Value (N/mm)
			JD4	JD5
SD9112SS	38	25.4	110	71
SD9212SS	64
The main members shall have densities representative of JD4 and JD5, 550 kg/m³ and 500 kg/m³, respectively. Tabulated characteristic withdrawal capacities are for normal duration of load. Tabulated characteristic withdrawal values are in N/mm of thread length into the main member.

Table 5. Minimum recommended spacing for connections with SD CONNECTOR SS screws

Condition		Minimum Distance or Spacing (mm)
Edge Distance	Perpendicular to grain loading	25
Edge Distance	Parallel to grain loading	13
End Distance	Perpendicular to grain loading	50
End Distance	Parallel to grain loading	50
Spacing	Between fasteners in a row	50
	Between non-staggered rows	13
	Between staggered rows	13
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 lumber manufacturer, whichever is more restrictive.

Brochures & Catalogues

Brochures and Catalogues

Flyer - SD Connector SS Screw

Technical Data & Docs

Technical Data Sheets

Technical Data Sheet - SDSS

Report Links

ESR-3046

FL9589

Warranty

Alternative Products

SCNR Ring-Shank Connector Nail (Collated & Loose)

Strong‑Drive^® connectors have been designed and tested with specific types of nails, which are generally referred to as Structural Connector Nails (SCN).

CSA Connector Screw

The CSA is a self-drilling Flat Head screw with a Type-17 Point tip suitable for installing construction connectors to timber structures.

Inspiration

SD9SS_Application_01.jpg

SD9SS_Application_03.jpg

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Structural Connections

Unmatched Quality from the Truss to the Foundation

With nearly 60 years of field and R&D experience, Simpson Strong-Tie^® timber connectors are manufactured to the industry's highest standards. From framing angles to straps to heavy-duty joist hangers, we offer the most diverse product line so that you have the right product for the job.

Simpson Strong-Tie^® connectors offer unmatched quality with laboratory and field testing, and are backed by our uncompromising commitment to customer service. As the company that built the connector industry, you can count on Simpson Strong-Tie^® to work closely with builders, engineers and building officials to deliver innovative, building code-compliant solutions to help build safer, stronger structures economically. Download the Structural Connectors Overview Flyer.

Timber Connectors

From testing to service to availability, everything we do is engineered to ensure your project's success. With every product, you know you are getting the quality, value, service and on-time delivery that we have built our reputation on for the past 60 years.

From straps and ties to joist hangers and much more, Simpson Strong-Tie^® structural connectors increase the strength and safety of timber-frame structures. Each connector is unique to Simpson Strong-Tie and is designed for specific applications without the need to adapt metal plating to suit a connection.

Steel Frame Connectors

From fully tested and engineered connectors and clips Simpson Strong-Tie^® provides comprehensive structural solutions for cold-formed steel construction. From steel-to-steel connections to full-scale lateral solutions and curtain wall connectors, we remain committed to developing new technology that helps to advance the cold-formed steel industry.

Find out how Simpson Strong-Tie timber connectors can help you build the right way every day. Download the Cold-Fromed Steel Construction Connectors Catalogue.

SD Strong-Drive Connector SS Screw