The Simpson FHSD114S0818 is a #8 x 1-1/4" collated flat head screw engineered specifically for fastening wood or wood structural panel sheathing to cold-formed steel framing (CFS). Featuring a yellow-zinc coating, a sharp #2 drill point, and curved collation designed for use with Quik Drive auto-feed screw systems, this screw delivers consistent, high-speed installation in light-gauge steel framing applications. The flat head profile sits flush with the work surface for a clean, professional finish, while the 18 TPI thread pattern ensures a secure, vibration-resistant connection. This bulk value pack includes 2,500 screws, making it an ideal choice for high-volume framing, sheathing, and panel attachment projects.

Key Features

• Flat head design - sits flush for a clean, low-profile finish
• Yellow-zinc coating - provides corrosion resistance for extended service life
• Curved collation - yellow zinc fasteners feature curved collation for reliable auto-feed performance
• #2 square drive - compatible with #8 screws; replacement bit BIT2S available
• Drill point (Point Size 2) - self-drilling tip for clean penetration into cold-formed steel without pre-drilling
• 18 TPI thread - optimized for secure engagement in cold-formed steel substrates
• Compatible with Quik Drive PRO200G2 and PRO200SG2 - designed for use with these auto-feed collated screw systems
• 2,500-piece bulk pack - maximizes productivity on large-scale projects
• Wood-to-CFS application - recommended for use with cold-formed steel up to a maximum thickness of 3/16"

Specifications

• Model Number (MPN): FHSD114S0818
• Screw Size: #8
• Length: 1-1/4 in.
• Head Type: Flat Head
• Head Diameter: 0.310 in.
• Drive Type: #2 Square
• TPI: 18
• Max. Grip Length: 0.858 in.
• Point Type: Drill Point
• Point Size: 2
• Coating / Material: Yellow-Zinc Coated
• Collation: Curved Collation
• Compatible Tools: Quik Drive PRO200G2, PRO200SG2
• Packaging Quantity: 2,500
• Country of Origin: Taiwan

Approved Applications

• Fastening wood or wood structural panel sheathing to cold-formed steel (CFS) framing
• Recommended for use with cold-formed steel at a maximum steel thickness of 3/16"
• Suitable for use with Quik Drive PRO200G2 and PRO200SG2 auto-feed collated screw systems

What's Included

• 2,500 x Simpson FHSD114S0818 #8 x 1-1/4" Collated Flat Head Wood-to-CFS Screws (Yellow-Zinc Coated)

Frequently Asked Questions

What auto-feed screw systems are compatible with these collated screws?

These screws are designed for use with the Quik Drive PRO200G2 and PRO200SG2 auto-feed collated screw systems. The curved collation is specifically engineered to ensure reliable feeding performance in these systems.

Do these screws require pre-drilling into cold-formed steel framing?

No pre-drilling is required. Each screw features a self-drilling drill point (Point Size 2) that allows clean penetration directly into cold-formed steel framing without the need for a pilot hole, speeding up installation on framing and sheathing projects.

What drive type is required to install these screws?

These screws use a #2 square drive, which is compatible with #8 screws. If a replacement bit is needed, the BIT2S is the recommended replacement bit for use with these fasteners.

What is the thread design on these screws, and why does it matter for cold-formed steel applications?

These screws feature an 18 TPI (threads per inch) thread pattern, which is optimized for secure engagement in cold-formed steel substrates. This thread design helps create a vibration-resistant connection, making it well-suited for structural sheathing and panel attachment to light-gauge steel framing.