Simpson #10 x 3/4" Flat Pan Head Framing-to-CFS Self-Drilling Screw from Simpson is a structural self-drilling fastener engineered for attaching cold-formed steel framing and sheet steel sheathing to cold-formed steel substrates. Designed with a flat pan head profile and a #3 square drive, this screw delivers reliable holding power in light-gauge steel construction, metal framing, and CFS sheathing assemblies where precision fit and consistent installation are critical.

Key Features

• Flat pan head design - sits flush and low-profile against the work surface, reducing interference and providing a clean, finished appearance in metal framing assemblies
• #3 square drive - delivers positive bit engagement that minimizes cam-out during installation, keeping the fastener seated and reducing driver bit wear over repeated use
• Self-drilling point (drill point, size 3) - eliminates the need for a pre-drilled pilot hole when fastening cold-formed steel, saving time and steps on the job site
• 16 TPI thread - provides strong thread engagement in light-gauge cold-formed steel framing, maximizing pull-through resistance and structural integrity
• #10 x 3/4" size - compact length suited for framing-to-CFS connections where material thickness demands a precise, controlled fastener profile
• Clear zinc coating - adds a layer of surface protection that helps resist corrosion during storage, handling, and installation in typical indoor metal framing environments
• 0.365" head diameter - proportioned to distribute clamping load evenly across the work surface without pulling through sheet steel sheathing

Why This Product

• Purpose-built for cold-formed steel framing connections - this screw is specifically designed for framing-to-CFS applications, meaning the thread pitch, point size, and head geometry are all matched to light-gauge steel work rather than being a general-purpose fastener adapted for the task
• Self-drilling capability speeds up installation - the drill-point tip bores through cold-formed steel without pre-drilling, cutting labor time on metal stud and sheathing projects where hundreds or thousands of fasteners may be installed in a single day
• Square drive reduces installation errors - the #3 square recess holds the driver bit more securely than Phillips drives, lowering the chance of slippage that can strip screw heads or damage the surrounding steel material
• Trusted Simpson engineering - produced by Simpson, a recognized name in structural fastener and connector solutions, giving contractors and builders confidence in performance for load-bearing and structural metal framing assemblies

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length: 3/4 in.
• Head Type: Flat Pan Head
• Head Diameter: 0.365 in.
• Drive Type: #3 Square
• TPI: 16
• Point Type: Drill Point
• Point Size: 3
• Coating: Clear Zinc
• Approx. Count per Lb.: 165
• Country of Origin: Taiwan

Available Pack Options

• FPHSD34B1016: 1 Lb
• FPHSD34B1016-5LB: 5 Lb
• FPHSD34B1016-5K: 5000 Pk

Approved Applications

• Fastening cold-formed steel framing to cold-formed steel
• Attaching sheet steel sheathing to cold-formed steel substrates
• Light-gauge metal framing assemblies in residential and commercial construction
• Structural CFS connections requiring a self-drilling flat pan head fastener

Frequently Asked Questions

What type of material is this screw designed to fasten?

This screw is specifically designed for fastening cold-formed steel framing and sheet steel sheathing to cold-formed steel. It is not intended for use in wood or masonry substrates - the drill point, 16 TPI thread, and overall geometry are engineered around light-gauge CFS framing applications.

Do I need to pre-drill holes before installing this screw?

No. This screw features a size 3 drill point that is self-drilling, allowing it to bore through cold-formed steel without a separate pilot hole. This saves installation steps and speeds up the fastening process on metal framing projects.

What driver bit does this screw require?

This screw uses a #3 square drive. A driver bit is included in each box, and a replacement bit is available under model BIT3S-2-R2 if additional bits are needed for high-volume installation work.

What does the clear zinc coating provide?

The clear zinc coating offers surface protection that helps guard against corrosion during storage, transport, and use in typical indoor metal framing environments. It is the standard corrosion protection level appropriate for interior cold-formed steel framing applications.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.