S-90357A160 1/2"-13 x 1" Alloy Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish extends service life in harsh industrial environments, minimizing maintenance needs.
• Precise Class 3A thread fit guarantees tight, secure connections with minimal play, enhancing assembly accuracy and vibration resistance.
• Ultra-low socket head profile allows for installation in confined spaces, offering design flexibility without compromising strength.
• High hardness (Rockwell C32) provides excellent wear resistance, maintaining thread integrity through repeated use.
• 1/4" hex drive compatibility enables easy installation with standard tools, speeding up assembly processes.
• Compliance with RoHS 3 and REACH ensures environmental safety and regulatory adherence for global supply chains.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these Black-Oxide Alloy Steel Socket Head Cap Screws address critical challenges in heavy machinery, automotive, and aerospace assemblies. The UNC coarse thread design facilitates quick installation and robust holding power, while the Class 3A thread fit minimizes loosening under dynamic loads. The ultra-low head profile is ideal for compact designs where space is constrained, and the black-oxide surface treatment combats rust and corrosion in humid or abrasive conditions. With a fully threaded shank and consistent 1" length, these screws provide uniform clamping force, making them a reliable choice for structural frames, engine components, and high-vibration equipment.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a precise Class 3A thread fit and coarse thread spacing for optimal engagement. Dimensions include a 1/2"-13 thread size, 1" length with a tight tolerance of -0.005" to 0.005", and a 1/4" hex drive. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring compliance with international environmental and safety standards for industrial fasteners.