S-90357A031 3/8"-16 x 1 3/4" Alloy Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
• Precision Class 3A thread fit guarantees tight, secure connections with minimal play, enhancing assembly accuracy and vibration resistance.
• Black-oxide coating on alloy steel provides superior corrosion resistance and a durable, non-reflective finish for extended service life.
• Ultra-low socket head profile allows installation in confined spaces where standard head height is prohibitive, increasing design flexibility.
• Rockwell C32 hardness offers excellent wear resistance, maintaining thread integrity through repeated use and harsh environments.
• Fully threaded design with UNC coarse threads enables quick assembly and strong holding power in a wide range of materials.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets international standards for hazardous substance restrictions.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these socket head cap screws in black-oxide alloy steel address critical challenges like space constraints and high mechanical stress. The ultra-low profile head and 3/16" hex drive facilitate easy installation in tight areas, common in machinery, automotive, and aerospace assemblies. With UNC coarse threads and a Class 3A thread fit, they provide rapid, secure fastening that resists loosening under vibration, reducing maintenance needs. The combination of 140,000 psi tensile strength and corrosion-resistant coating ensures longevity in harsh conditions, making them ideal for heavy-duty applications where reliability is paramount.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 3A thread fit for precise tolerances, and features a length tolerance of -0.005" to 0.005" for consistent dimensions. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from restricted hazardous substances. Manufactured to meet industry benchmarks for inch system fasteners, it guarantees reliable performance in professional environments.