S-90044A301 5/16"-32 x 1 1/2" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications, minimizing failure risks.
• Exceptional thread precision with Class 3A UNEF extra fine threads provides secure, vibration-resistant fastening in precision assemblies.
• Enhanced corrosion resistance from the black-oxide finish prolongs service life in harsh or humid environments.
• High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity over repeated use.
• Convenient installation with a 1/4" hex drive allows for easy torque application in confined spaces using standard tools.
• Full threading along the 1-1/2" length enables adjustable clamping force and versatile positioning.
• Regulatory compliance with ASTM A574, RoHS 3, and REACH ensures safety and environmental standards are met for global supply chains.

Professional Applications & Engineering Value

Engineered for demanding environments, this socket head cap screw combines black-oxide alloy steel with extra fine UNEF threads to address critical industrial challenges. The Class 3A thread fit delivers tight tolerances, reducing loosening under vibration in machinery, automotive, and aerospace assemblies. Its high tensile strength and Rockwell C37 hardness withstand dynamic loads, while the corrosion-resistant coating ensures longevity in moist or chemically exposed settings. Ideal for precision equipment, these screws provide reliable fastening where fine adjustment and durability are paramount, supporting efficient maintenance and reduced downtime.

Specification Summary & Compliance

This product features a 5/16"-32 UNEF extra fine thread with Class 3A precision tolerance for accurate fit. Manufactured to ASTM A574 specifications, it includes full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards.