S-91251A286 10-24 x 3/16" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in various industrial environments.
• Precise Class 3A thread fit guarantees tight, secure fastening with minimal play, ideal for applications requiring high vibration resistance.
• 5/32" hex drive design allows for easy installation and removal with standard tools, improving assembly efficiency and reducing labor time.
• Fully threaded body offers consistent clamping force along the entire length, ensuring uniform load distribution in assembled components.
• High hardness rating of Rockwell C37 enhances wear resistance, maintaining thread integrity through repeated use and adjustments.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety, meeting strict industry and regulatory standards.

Professional Applications & Engineering Value

These black-oxide alloy steel socket head cap screws are engineered to address common industrial challenges such as vibration loosening and corrosion-induced degradation. The 10-24 UNC coarse threads with a Class 3A fit provide superior grip in materials like metals and plastics, preventing back-off in high-vibration environments like machinery and automotive assemblies. The fully threaded design ensures maximum engagement, distributing stress evenly to avoid point failures. With a 170,000 psi tensile strength and Rockwell C37 hardness, they withstand heavy loads and repetitive use, making them ideal for precision equipment, aerospace components, and heavy-duty industrial fixtures where reliability and durability are critical.

Specification Summary & Compliance

This socket head cap screw features precise inch system measurements with a 10-24 UNC coarse thread and Class 3A thread fit for high accuracy. It complies with ASTM A574 specifications for alloy steel socket head cap screws, ensuring consistent manufacturing quality. Additionally, it is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for hazardous substances.