S-92949A077 2-56 x 1/4" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibrations.
• Precise Class 3A thread fit provides secure, tight fastening with minimal risk of loosening.
• Easy installation and removal thanks to the hex drive design, reducing assembly time and tool slippage.
• Fully threaded shank offers maximum grip and uniform stress distribution across the entire length.
• Durable rounded (button) head minimizes protrusion and enhances safety in compact spaces.
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees quality and environmental safety for global applications.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 2-56 UNC thread rounded head screws excel in applications where precision and durability are critical. The 18-8 stainless steel material, combined with a passivated finish, effectively resists rust and chemical exposure, making them suitable for electronics, machinery, and outdoor equipment. The hex drive ensures efficient torque transmission, reducing installation errors and maintenance downtime. With a coarse thread and Class 3A fit, these screws provide robust fastening in metals and plastics, addressing common issues like vibration-induced loosening and material fatigue. Ideal for heavy-duty fasteners in aerospace, automotive, and manufacturing, they deliver long-term reliability and cost savings.

Specification Summary & Compliance

This screw features a 2-56 UNC thread with Class 3A fit for high precision and strength. It adheres to ASME B18.3 standards, ensuring consistent dimensions and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable use in various industries.