S-90357A120 6-32 x 5/16" Alloy Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Black-oxide coating provides superior protection against rust and environmental degradation in demanding industrial settings.
• Maximum Tensile Strength: 140,000 psi tensile strength ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
• Precision Thread Fit: Class 3A fit guarantees tight, secure connections with minimal backlash, ideal for applications requiring high vibration resistance.
• Space-Saving Design: Ultra-low socket head profile allows for installation in confined spaces where clearance is limited.
• High Durability: Rockwell C32 hardness combined with alloy steel construction offers excellent wear resistance and long service life.
• Easy Installation: 1/16" hex drive enables quick, secure tightening with standard tools, improving assembly efficiency.
• Regulatory Compliance: Meets RoHS 3 and REACH standards, ensuring safe use in regulated industries and global markets.

Professional Applications & Engineering Value

These Black-Oxide Alloy Steel Socket Head Cap Screws are engineered to address critical challenges in precision assembly and high-vibration environments. The 6-32 UNC coarse thread with Class 3A fit ensures exceptional clamping force and resistance to loosening, making them ideal for machinery, automotive components, and electronic enclosures. The ultra-low profile head maximizes space utilization in compact designs, while the 140,000 psi tensile strength and Rockwell C32 hardness provide reliable performance under mechanical stress. The black-oxide surface treatment enhances corrosion resistance, extending service life in harsh industrial conditions without compromising dimensional stability.

Specification Summary & Compliance

This screw features a 6-32 UNC coarse thread with Class 3A precision fit, ensuring tight tolerances and consistent performance. Dimensions include a 5/16" length with a tolerance of -0.005" to 0.005", a 0.226" head diameter, and a 1/16" hex drive. Manufactured from alloy steel with a black-oxide finish, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for industrial applications.