Simpson #12 x 3/4" Flat Pan Head FPHSD Framing-to-CFS Self-Drilling Screw by Simpson is a structural fastener engineered specifically for connecting cold-formed steel framing and sheet steel sheathing to cold-formed steel. Designed for light-gauge steel construction, this self-drilling CFS screw cuts its own pilot hole on contact, eliminating the need for pre-drilling and saving time on framing installations. The flat pan head profile sits flush and low-profile against the material surface, making it a reliable choice for metal framing assemblies where a clean, secure connection is essential.

Key Features

• Clear zinc coating - provides a corrosion-resistant finish that protects the screw in interior cold-formed steel framing environments, helping maintain long-term fastener integrity
• #12 screw size with 14 TPI threading - the coarse thread pitch bites firmly into cold-formed steel, delivering strong holding power and resistance to pull-through in structural framing applications
• 3/4" length - sized for efficient single-layer or thin-gauge steel connections without overdriving or breaching the back face of the material
• Flat pan head design - the low-profile flat pan head distributes load across a wider bearing surface (0.365 in. head diameter), reducing the risk of pull-through while keeping the fastener seated flush
• #3 square drive - provides a positive, cam-out-resistant engagement with the driver bit, reducing slippage during installation and improving drive consistency in high-volume framing work
• Self-drilling drill point (size 3) - penetrates cold-formed steel without pre-drilling, speeding up installation and reducing tool requirements on the job site

Why This Product

• Purpose-built for cold-formed steel framing - this screw is specifically designed for framing-to-CFS connections, meaning its thread count, point type, and head geometry are matched to the demands of light-gauge steel construction rather than being a general-purpose fastener pressed into service
• Self-drilling capability eliminates pre-drilling steps - the size-3 drill point bores through CFS material in a single operation, reducing labor time and the number of tools needed during steel stud framing
• The #3 square drive reduces cam-out frustration - unlike Phillips drives that tend to slip under torque, the square drive maintains contact throughout the fastening cycle, making it easier to drive consistently in production framing scenarios
• Clear zinc coating over a #12 shank delivers a balance of corrosion resistance and structural performance for interior light-gauge steel applications where a reliable, code-appropriate fastener is required

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #12
• Length: 3/4 in.
• Head Type: Flat Pan Head
• Head Diameter: 0.365 in.
• Drive Type: #3 Square
• TPI: 14
• Point Type: Drill Point
• Point Size: 3
• Coating/Material: Clear Zinc Coating
• Approx. Count per Lb.: 147
• Country of Origin: Taiwan

Available Pack Options

• FPHSD34B1214: 1 Lb
• FPHSD34B1214-5LB: 5 Lb
• FPHSD34B1214-5K: 5000 Pk - includes #3 square drive (driver bit in each box; replacement bit model BIT3S-2-R2)

Frequently Asked Questions

What type of material is this screw designed to fasten?

This screw is specifically designed for fastening cold-formed steel (CFS) framing and sheet steel sheathing to cold-formed steel. It is not intended as a general wood-to-wood or wood-to-steel fastener - its thread count, drill point, and head geometry are optimized for light-gauge steel construction.

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

No. This screw features a self-drilling drill point (size 3) that penetrates cold-formed steel without a pilot hole, allowing it to be driven directly into CFS framing in a single step.

What driver bit does this screw require?

This screw uses a #3 square drive. A replacement driver bit is available under model BIT3S-2-R2 if a spare or replacement is needed.

What does the clear zinc coating provide?

The clear zinc coating provides a corrosion-resistant finish on the screw surface, helping protect the fastener in interior light-gauge steel framing environments over the life of the assembly.

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