S-91251A652 3/8"-16 x 6 1/4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, ideal for harsh industrial environments.
• High tensile strength of 170,000 psi ensures reliable performance under extreme loads.
• Precise Class 3A thread fit for secure, vibration-resistant assemblies in critical applications.
• Partially threaded design allows for optimal clamping force and easy alignment.
• Rockwell C37 hardness provides excellent durability and wear resistance.
• 5/16" hex drive socket head enables easy installation with standard tools in confined spaces.
• Compliance with RoHS and REACH ensures environmental and safety standards are met.

Professional Applications & Engineering Value

This 3/8"-16 UNC socket head cap screw is engineered from black-oxide alloy steel to address common industrial challenges such as corrosion, high stress, and assembly precision. The coarse thread and Class 3A fit minimize loosening in vibrating machinery, while the partially threaded rod design ensures consistent clamping without thread damage. Ideal for heavy-duty applications in automotive, aerospace, and machinery, it offers reliable fastening in demanding environments, backed by ASTM A574 certification for consistent quality and performance.

Specification Summary & Compliance

This fastener adheres to inch system dimensions with a 3/8"-16 UNC coarse thread and Class 3A thread fit for high precision. It meets ASTM A574 specifications, ensuring material and manufacturing consistency. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, making it suitable for global industrial use.