S-91251A347 10-32 x 1" 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.
• Superior tensile strength of 170,000 PSI ensures reliable performance in heavy-duty applications.
• Precise Class 3A thread fit guarantees secure fastening and vibration resistance.
• Fine UNRF threads provide improved load distribution and reduced risk of loosening.
• Fully threaded design offers consistent engagement and maximum holding power.
• High hardness (Rockwell C37) enhances durability and wear resistance.
• Compliance with RoHS 3 and REACH ensures safety and environmental standards are met.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in industrial settings, such as vibration-induced loosening and corrosion. The 10-32 UNRF Class 3A fine thread ensures a tight, precise fit that minimizes play and maintains integrity under dynamic loads. With a 170,000 PSI tensile strength and Rockwell C37 hardness, it withstands extreme mechanical stress in machinery, automotive assemblies, and precision equipment. The black-oxide surface treatment provides a protective layer against moisture and chemicals, extending service life in demanding applications while complying with industry safety regulations.

Specification Summary & Compliance

This socket head cap screw features a 10-32 UNRF Class 3A fine thread with right-hand direction and fully threaded rod, ensuring high precision and consistent performance. It meets ASTM A574 specifications for material and manufacturing standards, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) for environmental and safety requirements.