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Simpson

Simpson Strong-Tie 3.9 x 152mm SDWC Type 17 Structural Timber Truss Screws - 50 Box

★★★★★
85 reviews · 308+ sold
$89.46 $134.19 -33% OFF
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Last purchased 24 minutes ago by someone in Brisbane
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Simpson Strong-Tie 3.9 x 152mm SDWC structural timber truss screws create secure connections between roof and wall framing members, supplied in a box of 50. The cap head countersinks fully into the double top plate to avoid interfering with drywall, and the fully threaded shank locks the connection together.

  • Diameter: 3.9mm
  • Length: 152mm
  • Material: Steel
  • Head type: Torx T30 cap head
  • Point type: Type 17
  • Thread: Coarse, fully threaded
  • Finish: E-Coat clear zinc with orange top-coat
  • Pack quantity: 50

Each pack includes a Torx T30 driver bit (BIT30T) and an installation guide for correct fitting. The orange finish makes installed screws easy to inspect, and the Type 17 point drives into timber for fast, reliable structural fixing.

More about this product

Simpson Strong-Tie 3.9 x 152mm SDWC Type 17 Structural Timber Truss Screws - 50 Box provide secure connections for trusses and rafters, helping maintain structural integrity in your projects.

  • Cap head countersinks fully into the double top plate to avoid interference with drywall
  • Fully threaded shank for a secure connection between roof and wall framing members
  • Type 17 point for driving into timber
  • Torx T30 driver bit (BIT30T) and installation guide included in each pack
  • Orange finish for easy inspection
  • Box of 50

Questions & Answers

What size are these truss screws?

They are 3.9mm diameter by 152mm long.

How many come in the box?

50 screws per box.

What drive bit do they use?

A Torx T30 drive; a BIT30T driver bit is included in each pack.

Is anything else included?

Yes, each pack includes the Torx T30 driver bit and an installation guide.

What are they used for?

Connecting roof and wall framing members, such as trusses and rafters, to the top plate.

Why is the head orange?

The orange finish makes installed screws easy to inspect on site.

Standard Shipping Australia-wide
Ships in 1-2 business days from our Australian warehouses
30-Day Returns
Change your mind? Return within 30 days for a full refund. Item must be unused and in original packaging.

Customer Reviews

4.3 ★★★★☆ 74 reviews
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✓ Fast Delivery ✓ Great Quality ✓ As Described Verified Purchases
M
Michael C. 📍 Townsville QLD
★★★★★
1 month ago
✓ Verified Purchase

Works perfectly out of the box

Was exactly what I needed for the price I paid. Arrived well packaged and was easy to set up straight away. Already recommended it to a friend who is also thinking of getting one.

H
Hannah P. 📍 Cairns QLD
★★★★★
1 month ago
✓ Verified Purchase

Worth every cent

Did a lot of comparison shopping before buying here and I have no regrets. Best price I found anywhere and delivery was fast — 3 days to Melbourne. Product feels genuinely premium, not cheap at all. Packaging was solid too, box arrived in perfect shape. Will be back for more.

T
Thomas R. 📍 Ballarat VIC
★★★★★
1 months ago
✓ Verified Purchase

Does the job well

Simpson quality is always reliable and this was no exception. Fast delivery too.

J
Jessica L. 📍 Toowoomba QLD
★★★★★
2 months ago
✓ Verified Purchase

Already bought a second one

Placed the order in the evening and got a shipping notification the next morning. Arrived 2 days later in great condition. Product is well made and does everything it should. Really happy with the whole experience.

B
Ben A. 📍 Fremantle WA
★★★★★
2 months ago
✓ Verified Purchase

Quick delivery to regional QLD

The Simpson Strong-Tie arrived fast and works perfectly out of the box.

G
Grace W. 📍 Parramatta NSW
★★★★★
2 months ago
✓ Verified Purchase

Perfect gift — loved it

Bought this as a replacement for one I have had for years and I am glad I upgraded. The new one is noticeably better. Had a tracking number within a few hours of ordering. Packaging was excellent, nothing damaged. Already told a few mates about this site. Great prices and genuinely fast shipping.

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