S-90950A151 Length 3 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 410 Stainless Steel construction, ensuring long-term reliability in demanding environments.
• Exceptional holding power with 190 lbs pull-out and 225 lbs shear strength, providing secure fastening in concrete, brick, and block.
• Efficient installation requiring only a 3/16" drill bit, reducing labor time and effort on-site.
• Clean, flush finish thanks to the standard 82° flat head profile, ideal for applications where a smooth surface is critical.
• Reliable performance in high-strength concrete, tested and proven in 3,000 psi concrete for confidence in structural applications.
• Easy removal and adjustment as removable tapping screws, offering flexibility during assembly and maintenance.
• Wide compatibility with right-hand threads and pointed tip for straightforward driving into various masonry materials.

Professional Applications & Engineering Value

These 1/4" Phillips flat head tapping screws are engineered to address common challenges in concrete, brick, and block fastening, where vibration, load stress, and environmental exposure can compromise integrity. The 410 Stainless Steel material provides excellent resistance to rust and corrosion, making them suitable for both indoor and outdoor construction and masonry projects. The pointed tip and right-hand thread design facilitate quick penetration and secure grip, minimizing the risk of material cracking during installation. With a standard 82° countersink angle, they sit flush to prevent snagging and ensure a professional finish. Ideal for securing fixtures, HVAC components, and structural elements, these screws deliver consistent performance, reducing downtime and maintenance costs in industrial and commercial settings.

Specification Summary & Compliance

This product adheres to standard inch measurements with a thread diameter of 0.25" (1/4") and length of 3-1/4", ensuring precise fit in pre-drilled 3/16" holes. The flat head and Phillips drive comply with common industrial specifications for ease of use. Manufactured to meet general tapping screw standards, it is designed for reliable performance in various masonry applications. While specific certifications are not provided, the screw is made from 410 Stainless Steel, which typically aligns with industry norms for durability and may support compliance with environmental regulations like RoHS upon request, though verification is recommended for critical projects.