Model # SD9112R100

Internet #202071152

Store SKU #477314

Store SO SKU #592854

Simpson Strong-Tie #9 1-1/2 in. External Hex Flange Hex-Head Structural-Connector Screw (100-Pack)
0707392977001

Simpson Strong-Tie

#9 1-1/2 in. External Hex Flange Hex-Head Structural-Connector Screw (100-Pack)

$10.37 / each
If you buy 10 or more
$8.48 / each

Frequently Bought Together

Product Overview

Designed to replace nails in certain connectors, the load-rated Strong-Drive SD screw has been tested and approved for use in many popular Simpson Strong-Tie products. The SD structural-connector screw features an optimized shank which is specifically designed to be compatible with the fastener holes in Simpson Strong-Tie connectors. The hex head virtually eliminates cam-out and helps avoid stripping of the head during installation. The sharp point of the screw enables fast starts, and the patented serrated threads reduce torque for improved drivability.

  • Tested and approved for use in many of our best-selling connectors for both interior and exterior applications
  • Single-fastener steel-side-plate load capacity of the SD9 exceeds that of the 10d common nail
  • Ideal for use in tight spaces where using a hammer is difficult and more control is desired
  • #9 x 1-1/2 in. Structural Screw
  • Includes 100 screws
  • Optimized heat-treating for ductility and strength

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Customer Questions & Answers

15 Questions21 Answers

Customer Questions & Answers

#9 1-1/2 in. External Hex Flange Hex-Head Structural-Connector Screw (100-Pack)
#9 1-1/2 in. External Hex Flange Hex-Head Structural-Connector Screw (100-Pack)

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4 answers

Are these self tapping or do you need to pre-drill

This question is from #9 1-1/2 in. External Hex Flange Hex-Head Structural-Connector Screw (100-Pack)
Asked by
Boston
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March 20, 2015
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Answers (4)

Asked by
oside, ca
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Home Improvement Profile: DIYer
July 27, 2015
Answer: 
if pressure treated wood, you may want to pre drill as stated above w/ 3/32 bit.
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Asked by
Connecticut
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May 13, 2015
Answer: 
They are self-tapping. I opted to pre-drill them for my installation, but I could just as easily have driven them without doing so and I did in a few cases when I didn't have my drill bit on me.
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Asked by
Warwick, RI
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May 12, 2015
Answer: 
Yes, they are self tapping
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March 23, 2015
Answer: 
Predrilling is not required for the SD Structural Connector screws, but is recommended if there is a potential for splitting. If you plan to predrill, a 3/32" bit should be used for the SD9 (as recommended in the NDS). Thank you!
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3 answers

how thin is the screw, #9 dosn't describe it. (i need 1/4 in.)

This question is from #9 1-1/2 in. External Hex Flange Hex-Head Structural-Connector Screw (100-Pack)
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new york
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September 18, 2014
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Answers (3)

Asked by
Connecticut
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May 13, 2015
Answer: 
All #9 screws have a root diameter of roughly 1/8".
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Asked by
Warwick, RI
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Home Improvement Profile: DIYer
May 12, 2015
Answer: 
Actually... #9 answers it perfectly... Google "Wood screw dimensions" and you'll find several links that tell you a #9 screw is maximum head diameter .358" (23/64) shank size .177" (11/64) and obviously the length of these is 1 1/2 inch.
So, if you need 1/4" shank diameter, then you'd likely want a #14 screw. (I've uploaded a chart with this answer)
User submitted photo
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September 19, 2014
Answer: 
Hello sd21c, I’m Chris from the Home Depot’s how-to Community. Thank you for your question.
Actually, screw sizes below ¼” are numbered. The shank size of this #9 screw is 0.131”, compared to the 0.250 (1/4”) that you are looking for.
See the spec sheet here:
http://www.homedepot.com/catalog/pdfImages/99/990badab-4e39-4b39-bcbb-03bbae9807d3.pdf
I hope this helps,
Chris.
.
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2 answers

#9 x 1.5in Simpson hex head connector screw; can I buy this product in a box of 500 or 1,000 and price

This question is from #9 1-1/2 in. External Hex Flange Hex-Head Structural-Connector Screw (100-Pack)
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San Mateo CA
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March 5, 2014
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Asked by
Las Cruces, NM, USA
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June 3, 2014
Answer: 
I only saw boxes of 100 but there may be larger sizes.
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March 6, 2014
Answer: 
Thank you for your recent inquiry with The Home Depot. Because this item is only available in Home Depot stores, I believe the best advice would be to talk to one of our many specialty department professionals at your local Home Depot store. For any other questions, please visit your nearest local Home Depot store or call us at HomeDepot.com Customer Service 800-430-3376.
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1 answer

Use on CA pressure-treated wood?

This question is from #9 1-1/2 in. External Hex Flange Hex-Head Structural-Connector Screw (100-Pack)
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July 4, 2016
I'm totally confused about compatibility of fasteners and connectors. Can these screws be used on CA pressure-treated wood? Can I use them with galvanized connectors (for example, A21), or do I need to use ZMAX connectors (A21Z)? Do these meet ASTM A 153, in terms of galvanization?
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Answer (1)

July 5, 2016
Answer: 
I am not clear what type of treated wood you are using, but I can tell you the SD screws have a mechanically galvanized coating meeting ASTM B695 Class 55 which is recognized as an alternate to hot-dip galvanized in ESR-3046. This finish provides a medium level of corrosion protection, but can be used with either the standard galvanized connectors (G90 - low level of corrosion protection) or the Z-MAX Read More
I am not clear what type of treated wood you are using, but I can tell you the SD screws have a mechanically galvanized coating meeting ASTM B695 Class 55 which is recognized as an alternate to hot-dip galvanized in ESR-3046. This finish provides a medium level of corrosion protection, but can be used with either the standard galvanized connectors (G90 - low level of corrosion protection) or the Z-MAX connectors (G185 - medium level of corrosion protection). Please see the Guidelines for Selecting the Proper Materials and Coatings page on our website or in our catalog to confirm the recommended finish (connectors and fasteners) for your application. Thank you! Read Less
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Customer Reviews

Rated 4.7 out of 5 by 23 reviewers.
Rated 5.0 out of 5.0 by Excellent product, companion fasteners for Simpson brackets of various kinds. Hex head is easy to drive, and box of screws comes with a hex driver suitable for use in an impact driver. Screw shank can snap off in very tough material where the impact driver does a LOT of hammering, but otherwise quite tough. October 27, 2016
Rated 5.0 out of 5.0 by Best Product for Designed Purpose and More When used correctly with various angles and tie plates for trusses and walls, you can't go wrong for framing stability. More expensive than nailing but always always worth it! October 18, 2016
Rated 5.0 out of 5.0 by Hex head Screw Superb! Very nice quality and easy to work with........ October 18, 2016
Rated 5.0 out of 5.0 by Cost more, but worth it These are specifically made to go with Strong-Tie hangers and connecting plates. The hex heads are much less likely to strip vs. Phillips head screws, The screws are much easier to place accurately and more waterproof than galvanized nails and nail guns. They are stronger than hardened hanger nails. I just finished a deck using these, and will continue to use them whenever metal plates, connectors or joist hangers are called for. September 21, 2016
Rated 5.0 out of 5.0 by So much easier than nails! LOVE these fasteners! Much easier than hammering nails and (in my opinion) provide a tighter more secure joist set in place. May 8, 2016
Rated 5.0 out of 5.0 by Easy to drive with smaller impact driver I hate banging nails in tight spots, made life so much easier. Easy to remove to lift a joist hanger and reset. June 23, 2013
Rated 5.0 out of 5.0 by Top Notch Fastener These screws were precisely what I was looking for when installing hurricane ties on my shed. The hex heads fit very snugly into the included bit, which virtually eliminates the chance of rounding and makes it easy to sink them one-handed. The ability to sink these screws with a drill is excellent, so is the ability to EASILY remove them if need be without having to beat on your structure or pry helplessly at nail heads. I see that many folks have complained about the price, even giving the product one less star because they feel that these fasteners cost too much. Look: they do cost more than comparable nails, but only because they are worth every penny. If you have the budget to afford these screws for use with your structural ties, then I highly recommend them. May 13, 2015
Rated 5.0 out of 5.0 by Great Security for Joist Hangers I chose these screws because I was replacing an old 20' x 20' deck that was built in the 70's and as I ripped up the deck boards I could see that a lot of the nails used on the joist hangers had been either loosened over time or some the nail head had broken off. I have used these screws on a previous deck and they hold strong, plus they are design for the purpose of connecting joist hangers. The good thing about these also is that if you misplace a hanger for some reason you can easily remove the screw and move the hanger. These screws are also made to withstand the chemicals in pressure treated wood, so they won't rust away. September 18, 2013
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