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SD9 SS Connector SS Screw
SD9 SS Connector SS Screw
SD9 SS Connector SS Screw
SD9 SS Connector SS Screw
SD9 SS Illustration
SD9 SS Illustration
SD9112SS-R100
SD9112SS-R100
SD9212SS-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

100

 

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

  1. 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

  1. 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

2185

2455

2405

1815

1745

2015

  1. 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

  1. SD SS screws shall be installed normal to the face or edge of the timber.
  2. 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

  1. 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

Parallel to grain loading

13

End Distance

Perpendicular to grain loading

50

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

PDF icon Flyer - SD Connector SS Screw
Technical Data & Docs

Technical Data Sheets

PDF icon Technical Data Sheet - SDSS

Report Links

Warranty

Warranty

Masterspec
Alternative Products

Alternative Products

SCNR Ring-Shank Connector Nail

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

CNA Ring-Shank Connector Nail

CNA Ring-Shank Connector Nail is tested and approved for use with Simpson Strong-Tie joist hangers, brackets, straps and nail plates.

Inspiration
Request a Demo

Request a Demo/Sample

Experience the innovation design of Simpson Strong-Tie's products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to schedule a time to talk and give you a personal demo of Simpson Strong-Tie products.

Request a Demo/Sample

Experience the innovation design of Simpson Strong-Tie's products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to schedule a time to talk and give you a personal demo of Simpson Strong-Tie products.

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.