S-91555A121 Length 1 1/8" Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide steel coating, extending screw lifespan in various environmental conditions.
• Enhanced holding power in engineered wood due to thread forming design, reducing material splitting in fiberboard and particleboard.
• Efficient installation with reduced cam-out from the Phillips No. 2 drive, ensuring secure fastening and time savings.
• Optimized thread engagement with 11 threads per inch and partial threading, providing strong pull-out resistance without unnecessary friction.
• Quick, precise starts with pointed tip, minimizing pre-drilling effort and improving alignment in wood applications.
• Compatibility with standard 5/64" drill bits, simplifying workflow and reducing tooling requirements for professionals.
• Durable pan head design offering a balance of low profile and sufficient drive torque for repeated use.

Professional Applications & Engineering Value

These No. 8 wood screws are precision-engineered to address common challenges in fiberboard and particleboard assembly, where material integrity is critical. The thread forming design compresses wood fibers rather than cutting them, significantly reducing the risk of splitting in low-density substrates. Made from Black-Oxide coated steel, the screws resist rust and wear, ensuring long-term reliability in interior applications like furniture, cabinetry, and shelving. The partially threaded shank concentrates grip strength where needed, while the Phillips pan head allows for flush mounting without sacrificing drive stability. This combination delivers consistent performance, faster installation, and reduced waste for woodworking and construction professionals.

Specification Summary & Compliance

This product adheres to standard inch measurements with a thread diameter of 0.164" and length of 1-1/8". It features a right-hand thread direction and is designed for use with a 5/64" drill bit (0.078" diameter). The screws comply with general industry standards for wood screw dimensions and are manufactured to ensure consistent fit and function. Materials and processes meet common regulatory guidelines for industrial fasteners, supporting reliable performance in specified applications.