S-91251A068 1-72 x 3/8" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength: Withstands up to 170,000 psi for reliable performance in high-stress industrial applications.
• Superior Hardness & Durability: Rockwell C37 hardness ensures long-lasting wear resistance and reduced risk of stripping.
• Precision Fine Thread Fit: Class 3A UNF threads provide tight, secure fastening with minimal backlash in precision assemblies.
• Enhanced Corrosion Resistance: Black-oxide coating on alloy steel offers improved protection against rust and environmental factors.
• Optimized Hex Drive Design: 1/16" hex socket allows for easy installation and high torque application without cam-out.
• Full Thread Engagement: Fully threaded 3/8" length ensures maximum grip and uniform load distribution.
• Regulatory Compliance Assurance: Meets ASTM A574, RoHS 3, and REACH standards for safe, quality-conscious sourcing.

Professional Applications & Engineering Value

Engineered for precision-critical environments, these 1-72 UNF Class 3A Socket Head Cap Screws address common industrial challenges such as vibration loosening and material fatigue. The black-oxide alloy steel construction, combined with fine thread spacing, ensures secure fastening in compact assemblies like electronics, aerospace components, and medical devices. The hex drive and fully threaded design facilitate easy installation in confined spaces while maintaining 170,000 psi tensile strength, making them ideal for applications demanding high reliability and corrosion resistance under dynamic loads.

Specification Summary & Compliance

This socket head cap screw adheres to Class 3A thread fit tolerances per UNF standards, ensuring precise engagement. Manufactured in compliance with ASTM A574 for consistent quality, it is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.