SD Strong-Drive Connector SS Screw

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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.	Screw Length (mm)	Thread Length (mm)	Head Pull-through Capacity - SG8 (N)		Head Pull-through Capacity - SG6 (N)
			Timber Head Side Member Thickness (mm)		Timber Head Side Member Thickness (mm)
			12 - 20 (WSP)	≥20 (WSP)	12 - 20 (WSP)	≥20 (WSP)
SD9112SS	38	25.4	1700	3200	1200	2200
SD9212SS	64
SD SS screws shall be installed normal to the face of the timber.

Table 2. Head Pull-through Capacity for single SD CONNECTOR SS screws in single withdrawal connections – seasoned timber for Structural Grades SG8 and SG6

Model No.	Head Marking (##)	Screw Length (mm)	Thread Length (mm)	Diameter (mm)			Fastener Strength
				Shank	Major	Minor	Bending Yield Moment (N.mm)	Tension (kN)	Shear (kN)
SD9112SS	1.5	38	25.4	3.5	4.3	3.0	4386	7.0	5.4
SD9212SS	2.5	64
Tension and shear strengths are characteristic strengths from tests.

Table 3. Characteristic Capacity (Qk) for single SD CONNECTOR SS screws in single shear connections – seasoned timber for Structural Grades SG8 and SG6

Model No.	Screw Length (mm)	Thread Length (mm)	Characteristic Shear Capacity - SG8 (N)			Characteristic Shear Capacity - SG6 (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	1970	-	-	1745	-	-
SD9212SS	64	25.4	2185	2455	2405	1815	1745	2015
SD SS screws shall be installed normal to the face or edge of the timber.

Table 4. Characteristic Capacity (Qk) for single SD CONNECTOR SS screws in single shear connections – steel-to-timber (side grain) for seasoned Structural Grades SG8 and SG6

Model No.	Screw Length (mm)	Thread Length (mm)	Characteristic Shear Capacity 1-mm Steel-to-Timber (N)
			SG8	SG6
SD9112SS	38	25.4	2470	1595
SD9212SS	64		2940	1595
SD SS screws shall be installed normal to the face or edge of the timber. Connection withdrawal strength shall be based on thread length penetration into the point-side member and shall be the lesser of connection withdrawal strength and pull-through resistance.

Table 5. Characteristic Withdrawal Capacity (Qk) for single SD CONNECTOR SS screws – seasoned timber for Structural Grades SG8 and SG6.

Model No.	Screw Length (mm)	Thread Length (mm)	Characteristic Withdrawal Value (N/mm)
			SG8	SG6
SD9112SS	38	25.4	124	86
SD9212SS	64
Connection withdrawal strength shall be based on thread length penetration into the point-side member and shall be the lesser of connection withdrawal strength and pull-through resistance.

Table 6. 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

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

Masterspec

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 (Collated & Loose)

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 Timber Connectors NZS 3604 Catalogue.

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. Download the Timber Construction Connectors Catalogue (2016-2018).

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