Product Description
Simpson #10 x 3/4" Self-Drilling Hex Washer Head Screw with #3 Drill Point by Simpson is a zinc-coated metal-to-metal fastener engineered for reliable, high-speed penetration into structural steel without pre-drilling. With a hex washer head and sharp drill point, this screw drives cleanly through steel decking, cold-formed steel framing, and side-lap stitching applications - delivering professional results in demanding construction environments.
Key Features
- #10 screw size with 3/4" length - a compact yet sturdy profile ideal for thin-gauge steel-to-steel connections where a shorter fastener maintains flush, controlled seating
- Hex washer head with 5/16" drive - the wide washer bearing surface distributes clamping load evenly, reducing the risk of pull-through while the hex drive allows high-torque power tool compatibility
- #3 drill point self-drilling tip - eliminates the need for pre-drilling pilot holes, saving time on the job and reducing the number of tool changes during steel framing or decking installation
- 16 TPI machine thread - fine thread pitch creates strong thread engagement in steel substrates, resisting back-out and maintaining a secure, vibration-resistant connection
- Clear zinc coating - provides a corrosion-inhibiting barrier suited for interior structural steel applications, helping the fastener maintain integrity in typical building environments
- Machine thread type - designed specifically for metal-to-metal fastening, ensuring clean thread formation and consistent pull-out resistance in steel framing members
Why This Product
- The #3 self-drilling point allows direct installation into structural steel without pre-drilling, cutting labor time significantly on steel decking and cold-formed framing projects
- The hex washer head design pairs with a standard 5/16" hex driver bit for fast, consistent installation with power tools - minimizing cam-out and stripped heads on large-volume jobs
- The 16 TPI machine thread delivers firm, reliable engagement in metal-to-metal assemblies, making this screw a dependable choice for steel stitching and side-lap connections where pull-out resistance matters
- The clear zinc coating offers corrosion resistance appropriate for protected interior structural steel applications, supporting long-term fastener performance in framing systems
Specifications
- Brand: Simpson Strong-Tie
- Screw Size: #10
- Length: 3/4 in.
- Head Type: Hex Washer Head
- Head Diameter: 0.415 in.
- Drive Type: 5/16 in. Hex
- Thread Type: Machine Threads
- TPI: 16
- Point Type: Drill Point
- Point Size: #3
- Coating: Clear Zinc
- Model No.: X34B1016
- Country of Origin: Taiwan
Available Pack Options
- X34B1016R100: 100 Pk
- X34B1016-5K: 5000 Pk
Approved Applications
- Fastening steel decking to structural steel
- Steel stitching - side-lap stitching connections
- Cold-formed steel framing assembly
- Metal-to-metal fastening in interior structural applications
Frequently Asked Questions
- Do I need to pre-drill before installing this screw?
- No. This screw features a #3 self-drilling drill point that penetrates steel directly without requiring a pilot hole, making it faster and more efficient for steel decking and framing work.
- What driver bit does this screw require?
- This screw uses a 5/16 in. hex head drive. Simpson offers a compatible replacement driver bit - BITHEXR516-R1 - designed for use with this hex washer head screw.
- What types of steel connections is this screw designed for?
- This self-drilling screw is designed for fastening steel decking to structural steel, steel side-lap stitching, and cold-formed steel framing applications. Its 16 TPI machine thread provides strong engagement specifically in metal-to-metal assemblies.
- What coating does this screw have, and what environment is it suited for?
- This screw has a clear zinc coating (model X34B1016) that provides corrosion resistance appropriate for interior structural steel applications. It is not intended for exterior or pressure-treated lumber use.
Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.
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