S-91355A077 10-32 x 1/2" ASME B18.3, ASTM F835 Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide finish, extending service life in harsh industrial environments.
• Exceptional tensile strength (120,000 psi) and hardness (Rockwell C39) for reliable performance under high-stress conditions.
• Precision Class 3A thread fit ensures tight, secure fastening with minimal backlash in critical assemblies.
• Integrated flange design eliminates the need for separate washers, simplifying installation and reducing parts count.
• 1/8" Hex drive provides secure tool engagement and high torque transmission without stripping.
• Fully threaded 1/2" length offers maximum grip and adjustment flexibility in various material thicknesses.
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards for global supply chains.

Professional Applications & Engineering Value

Engineered for demanding applications, this 10-32 UNF Class 3A Rounded Head Screw delivers robust performance in machinery, automotive, and electronics assemblies. The Black-Oxide Alloy Steel construction provides excellent resistance to oxidation and wear, reducing maintenance costs. Its fine thread and Class 3A fit ensure vibration resistance and leak-proof seals in precision equipment, while the flange design distributes clamping force evenly, preventing surface damage. Ideal for high-strength, corrosion-resistant fastening solutions that meet rigorous industry standards.

Specification Summary & Compliance

This screw features a 10-32 UNF fine thread with Class 3A tolerance for precise fit, a 1/2" length, and fully threaded design. It conforms to ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.