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#9 x 1-1/2 in. 1/4-Hex Drive, Strong-Drive SD Connector Screw (100-Pack)

  • Hex head makes cam-out nearly impossible
  • Serrated threads reduce torque, thus improving drivability
  • Sharp screw point enables fast starts for increased productivity
  • See More Details

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Product Overview

Deck Glamour Photo

Deck It Out

Strong decks bring beauty and entertaining space to your outdoor living area

Deck Glamour Photo

Make Your Deck Beautiful and Safe

Building a safe, strong deck starts with the proper connectors and fasteners

Photo of a deck being built

Deck Building Tips and Tricks

Installing corrosion-resistant connectors and fasteners helps extend the life of your deck

SDWH Screw being installed into ledger

Ledger connections critical for deck safety

Strong-Drive® SDWH Timber-Hex HDG screw delivers high-strength, wood-to-wood connectivity, such as deck ledger applications

DTT2Z guardrail install

Guardrail Installation Tips and Tricks

Don’t take chances with guardrail connections. DTT2Z deck tension ties fasten guardrails to deck framing.

DTT1Z install

Securing the Deck to the House

Install DTT1Z as a tension tie to meet building codes and eliminate the need to access to the floor joists inside the home

LSCZ install

Take the Step to Secure Deck Stairs

LSCZ adjustable stair-stringer connector offers a concealed connection between the stair stringer and the carrying header or rim board

Tight LUS26Z install shot

Joist Hangers

Provides bearing and uplift resistance

Tight H1 install shot

Hurricane Ties

Ideal for preventing lateral movement of joists

Tight SD screw install photo

SD Connector Screw

The only screw approved with Simpson Strong-Tie connectors

Tight install shot of LCEZ4

Post Caps

LCEZ end post caps provide a post-to-beam connection in new or retrofit deck applications

Tight PBSZ install photo

Post Base

Features a 1 in. standoff to resist wood decay

Stainless-steel connector product shot

Prevent Corrosion

Deck-Drive DWP stainless-steel fasteners are recommended for higher-exposure environments or applications

The Strong-Drive SD Connector screw is specifically designed to replace nails in certain Simpson Strong-Tie connectors and is the only screw approved for that application. The load-rated SD screw has been tested and approved for use in many popular Simpson Strong-Tie products. In certain applications screws are easier and more convenient to install than nails, and the single-fastener load values achieved by the SD screw exceed those of typical 10d common or 16d common nails. In addition, the galvanized coating makes the SD screw ideal for interior and most exterior conditions.
  • Tested and approved for use in many of Simpson Strong-Tie's best-selling connectors for both interior and most exterior applications
  • Ideal for use in connector applications where more control is desired or using a hammer is inconvenient
  • 1/4-in. hex head with 0.37-in. diameter integrated washer reduces cam-out and is stamped with the Simpson Strong-Tie "≠" sign and the fastener size for easy identification after installation
  • Shank is specifically designed to match the fastener holes in Simpson Strong-Tie connectors
  • Optimized heat treating for ductility and strength
  • Size: #9 x 1-1/2 in.
  • Hex driver included
  • Mechanically galvanized, Class 55 coating meets the requirements for use in preservative-treated and fire-retardant-treated wood per the 2012 and 215 IRC
  • Quantity: 100
  • Common project applications: remodeling, fencing, storage, cabinets, framing
  • Shop all Simpson Strong-Tie here.

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Specifications

Dimensions

Screw Length
1-1/2 in
Thread Pitch
0.00

Details

Color Family
Steel
Drive Style
Hex
Fastener Plating
Galvanized
Fastener Type
Wood Screw
Fastener/Connector Material
Steel
Features
ACQ Rated,Coated,Self Drilling
Finish
Steel
Finish Family
Galvanized
Head Style
Hex
Included
Driver Bit
Interior/Exterior
Exterior,Interior
Materials Fastened
Wood to Wood
Measurement Standard
SAE
Package Quantity
100
Product Weight (lb.)
0.9 lb
Returnable
90-Day
Size
#9

Warranty / Certifications

Manufacturer Warranty
Limited Warranty

Questions & Answers

50Questions46Answers

are two different size screws used with 2x10 single simpson joist hangars?

Asked by Jeff November 20, 2020
3
Answers

No, use the same size. Should be #10

What is the best product to use for lateral load application?

Asked by Bobzilla September 1, 2020
3
Answers

Sure. Be sure these screws are hidden (not pretty). There's some SPAX screws that looks pretty if they're going to be visible.

These okay for treated wood?

Asked by RonN July 27, 2020
4
Answers

Yes

Can we use these screws to attach deck hangers and replace bad hanger nails that have popped out?

Asked by Teri June 26, 2020
4
Answers

Yes, as long as the wood is still in good condition, no rotten wood.

Wanting to purchase at a store near Little Rock. Only option here is scheduled delivery

Asked by dimples June 23, 2020
2
Answers

Call the store you prefer and ask them to order the product and they will call you when it comes in.

Are these an acceptable diameter for use with the Strong-Tie Pipe Grips?

Asked by Caity May 17, 2020
6
Answers

Yes

will this work on a 2x10 joist, which will be backed by a single 2x10 header? Actually its a doub...

Asked by rob May 8, 2020
8
Answers

Yes, with a joist hanger. If you have a double header or ledger though, I would use the 2.5" screws though

are they approved for ACQ pressure treated wood

Asked by Drew May 4, 2020
4
Answers

Yes

Would these work on concrete? Trying to work on a project to use Simpson Strong Galvanized Steel ...

Asked by Thatguybob April 19, 2020
6
Answers

These are just designed for wood

What is the best torque setting for this connector? 1) Connecting 4X4 PT to post base and 2) wood...

Asked by slr April 18, 2020
6
Answers

Just drive it until it is nice and tight

#9 x 1-1/2 in. 1/4-Hex Drive, Strong-Drive SD Connector Screw (100-Pack) - page 2

Customer Reviews

  • 4.8
    out of 551 reviews
  • 95% recommend this product
Filter by:
Showing 1-10 of 551 reviews
Solid screws for the price. I've used them over the years on deck joist hangers and mending plate...
Solid screws for the price. I've used them over the years on deck joist hangers and mending plates. These screws are much easier to install and stronger than 10d nails. These screws also have a quality galvanized coating. Each box comes with a driving bit and my impact driver drives them very quickly. No need for pre-drilling.
by SteveVA
Not very strong
I used these for joist hangers for a deck and unfortunately many of them sheared off. I wasn't over tightening them. They all sheared off at the same place, right at the start of the thread. Luckily the joist hangers had more holes than I needed to put screws in, so I could just put one in another hole. I didn't count how many sheared off but I'm guessing about 5-10% and that was even after I was being extra careful. Besides that I liked them. The driver worked fine.
by Baz
6 people found this helpful
High Quality Product!...
High Quality Product!
by DavidS
1 person found this helpful
Simple product. Built strong. Using them as part of a project to build a deck.
Simple product. Built strong. Using them as part of a project to build a deck.
by Leonard
1 person found this helpful
Excellent screw. Strongest screw I have used. Easy to set in wood and pulls tight.
Excellent screw. Strongest screw I have used. Easy to set in wood and pulls tight.
by crazystang70
1 person found this helpful
Excellent! Use a 1/4" impact driver and drive away! I framed out all the joists and set my 6x6 po...
Excellent! Use a 1/4" impact driver and drive away! I framed out all the joists and set my 6x6 posts with these on a new 16x14 foot composite deck. Used Simpson strong tie joist hangers for 2x10 joists and Simpson strong tie 6x6 base plates to mount the posts to the concrete piers. It doesn't get any easier. The framing was way over engineered, but with the Wolf composite having a 50 year warranty, the few extra bucks gave me piece of mind. Just need to finish my steps and it will outlast anything in the county. Highly recommended.
by Paul
Great product and install instructions. Superior strength over others.
Great product and install instructions. Superior strength over others.
by na
Worked great with Simpson tie's to add strength and shelves inside a Lifetime shed.
Worked great with Simpson tie's to add strength and shelves inside a Lifetime shed.
by TandS
2 people found this helpful
I used these with angle brackets to attach my foundation top plate to the house's floor joists (e...
I used these with angle brackets to attach my foundation top plate to the house's floor joists (er, the 2x6 that runs around the perimeter of the house) for seismic reasons. Most went in without a problem (some needed a little help with a hammer to get them started), didn't see any splitting in 60yr old wood. I won't know if they are really good until an earthquake hits, tho. Check back then...
by DAVID
2 people found this helpful
I used these when building a cover over my back porch. I used Simpson metal supports to build th...
I used these when building a cover over my back porch. I used Simpson metal supports to build the structure and these were the fasteners designed for those supports. Hex head bit is included in the package. Make the job quick and easy.
by Mtnguy
2 people found this helpful
Showing 1-10 of 551 reviews