S-90044A271 1"-12 x 3" 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
• Corrosion-resistant black-oxide coating on alloy steel provides enhanced durability in demanding environments
• Precision Class 3A fine threads deliver superior fit and vibration resistance in critical applications
• 3/4" hex drive design allows for high-torque installation without stripping or cam-out
• Fully threaded shank offers maximum grip length and consistent clamping force distribution
• ASTM A574 certification guarantees consistent quality and mechanical properties
• RoHS 3 and REACH compliance ensures environmental responsibility and global regulatory acceptance

Professional Applications & Engineering Value

These socket head cap screws deliver critical engineering solutions where precision fastening and high tensile strength are paramount. The black-oxide alloy steel construction combined with Rockwell C37 hardness provides exceptional resistance to wear and corrosion in industrial machinery, automotive assemblies, and heavy equipment applications. The 1"-12 UNRF fine thread configuration maintains secure connections in high-vibration environments, while the 3/4" hex drive enables efficient installation in confined spaces. These fully threaded fasteners ensure uniform stress distribution across the entire engagement length, making them ideal for critical structural connections requiring Class 3A thread fit precision and reliable performance in demanding operating conditions.

Specification Summary & Compliance

Manufactured to ASTM A574 specifications with Class 3A thread fit tolerance for precision engagement. Features UNRF fine threads with right-hand direction and fully threaded design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. The inch system measurement ensures compatibility with North American industrial specifications and maintenance protocols.