S-90357A005 8-32 x 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 in high-stress applications, reducing the risk of fastener failure.
• Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in dynamic environments.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance, extending service life in harsh industrial conditions.
• Ultra-low socket head profile allows installation in confined spaces while maintaining high torque capability with a 5/64" hex drive.
• Rockwell C32 hardness delivers excellent wear resistance, maintaining thread integrity through repeated use.
• Coarse UNC threads enable quick assembly and disassembly, improving maintenance efficiency in production settings.
• Full threading along the 3/4" length provides consistent clamping force distribution across the entire engagement area.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Black-Oxide Alloy Steel socket head cap screws solve critical fastening challenges where space constraints and vibration resistance are paramount. The ultra-low profile head design combined with 8-32 UNC coarse threads allows secure fastening in compact assemblies commonly found in machinery, automotive components, and electronic enclosures. The Class 3A thread fit ensures precise mating with tapped holes, eliminating play that could lead to equipment malfunction. With 140,000 psi tensile strength and corrosion-resistant black-oxide surface treatment, these screws maintain structural integrity in environments exposed to moisture, chemicals, and thermal cycling, making them ideal for OEM manufacturing and maintenance operations requiring durable, high-performance industrial fasteners.

Specification Summary & Compliance

This socket head cap screw features precision 8-32 UNC coarse threads with Class 3A fit per ASME B1.1 standards, ensuring exact dimensional accuracy with length tolerance of -0.005" to 0.005". Manufactured from alloy steel with Rockwell C32 hardness and 140,000 psi tensile strength, the fastener complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety requirements for industrial applications worldwide.