S-91251A349 10-32 x 1 1/4" 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.
• Precise Class 3A thread fit provides superior thread engagement and vibration resistance, minimizing loosening in critical assemblies.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable, non-reflective finish suitable for various industrial environments.
• Partially threaded design allows for secure clamping on specific sections, providing flexibility in applications where full threading isn't required.
• Fine UNRF thread spacing delivers improved load distribution and better sealing capabilities compared to coarse threads.
• 5/32" hex drive socket head enables high-torque installation with standard tools while maintaining a low-profile design for space-constrained applications.
• Comprehensive compliance with ASTM A574, RoHS 3, and REACH standards ensures material quality and environmental responsibility for global supply chains.

Professional Applications & Engineering Value

These 10-32 UNRF socket head cap screws deliver critical engineering advantages in precision machinery, automotive assemblies, and industrial equipment where vibration resistance and reliable clamping force are paramount. The black-oxide alloy steel construction combines the strength of alloy steel with corrosion protection, addressing common failure points in harsh operating environments. The fine thread spacing and Class 3A thread fit provide exceptional holding power in thin materials and applications requiring precise preload control. The partially threaded design offers engineering flexibility by allowing unthreaded shank sections to function as precision dowels or pivot points. These socket head cap screws solve critical fastening challenges in aerospace components, precision instruments, and heavy machinery where both mechanical performance and regulatory compliance are non-negotiable requirements.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with Class 3A thread fit precision and UNRF fine thread form specifications. These socket head cap screws meet ASTM A574 manufacturing requirements for alloy steel socket head cap screws, ensuring consistent material properties and performance characteristics. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees these fasteners meet international standards for restricted substances, making them suitable for global engineering projects and export applications.