Product Description
Simpson Strong-Drive SDWC TRUSS Screw - 0.155 in. x 4-1/2 in. | T30 6-Lobe | E-Coat Black | 50-Count (SDWC15450-KT)
The Simpson Strong-Drive SDWC TRUSS Screw (Model SDWC15450-KT) is a high-strength structural wood screw engineered specifically for fastening trusses and rafters to wall top plates. Designed with a shorter thread length to accommodate multi-ply members - including plated trusses, engineered-lumber products, and solid-sawn lumber - this screw delivers a time-saving and reliable connection solution. The fully-threaded shank engages the entire length of the fastener, ensuring a secure, load-bearing connection between roof and wall framing members. Measuring 0.155 in. in diameter x 4-1/2 in. in length, and finished in a durable black E-coat electrocoating, the SDWC TRUSS screw is a trusted choice for structural wood framing applications where performance and ease of installation both matter.
Key Features
- Cap-Style Head: Countersinks fully into the double top plate to avoid interference with drywall or finish trades.
- Wide Installation Angle Tolerance: Makes it easy to install the SDWC correctly, reducing the chance of improper fastening.
- Interior Installation Capability: Can be installed from inside the structure, eliminating the need for exterior work on upper stories and enhancing job-site safety.
- Flexible Fastening Sequence: Fastening can be performed before or after exterior sheathing is applied for added scheduling flexibility.
- Type-17 Point: Provides faster starts and easier driving, minimizing installation time.
- Fully-Threaded Shank: Engages the entire fastener length for a secure, continuous connection between framing members.
- T30 6-Lobe Drive: Matched-tolerance driver bit (included) engages the fastener head securely to allow one-handed driving. Replacement bit part no. BIT30T-2-R2.
- E-Coat Electrocoating: Black electrocoated finish for corrosion resistance and a clean, professional appearance.
- Metal Installation Guide Tool Included: Helps ensure proper installation angle and placement.
- Kit Quantity: 50 screws per package.
Specifications
- Model Number (MPN): SDWC15450-KT
- Shank Diameter: 0.155 in.
- Length: 4-1/2 in.
- Thread Length: 4-1/4 in.
- Head Type: Cap Head
- Head Diameter: 0.335 in.
- Drive Type: T30 6-Lobe
- Point Type: Type-17
- TPI (Threads Per Inch): 7
- Coating / Finish: E-Coat Electrocoating
- Color: Black
- Package Quantity: 50
- Country of Origin: Taiwan
Approved Applications
- Fastening Truss/Rafter-to-Plate connections
- Multi-ply member connections including plated trusses
- Engineered-lumber product fastening
- Solid-sawn lumber structural connections
What's Included
- (50) Strong-Drive SDWC screws
- (1) Matched-tolerance driver bit - Part No. BIT30T-2-R2 (also sold separately)
- (1) Metal installation guide tool - SDWC-GUIDE
Frequently Asked Questions
- What is the SDWC TRUSS screw designed to fasten?
- The SDWC TRUSS screw is engineered specifically for fastening trusses and rafters to wall top plates. It is designed with a shorter thread length to accommodate multi-ply members, including plated trusses, engineered-lumber products, and solid-sawn lumber.
- What drive type does this screw use, and is a driver bit included?
- This screw uses a T30 6-Lobe drive. Each kit includes one matched-tolerance driver bit (part no. BIT30T-2-R2), which engages the fastener head securely to allow one-handed driving. A replacement bit can be purchased separately using part no. BIT30T-2-R2.
- Can this screw be installed from inside the structure, and does installation timing matter?
- Yes. The SDWC TRUSS screw can be installed from inside the structure, eliminating the need for exterior work on upper stories and enhancing job-site safety. Additionally, fastening can be performed before or after exterior sheathing is applied, providing added scheduling flexibility.
- What are the key dimensions and finish specifications for this screw?
- The screw has a shank diameter of 0.155 in., an overall length of 4-1/2 in., and a thread length of 4-1/4 in. with 7 threads per inch. The cap head measures 0.335 in. in diameter. The finish is a black E-coat electrocoating. This kit contains 50 screws.
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