S-91251A353 10-32 x 2" 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.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh industrial environments and minimizing maintenance needs.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, enhancing joint integrity and reducing loosening over time.
• High hardness (Rockwell C37) offers excellent wear resistance, maintaining thread form and drive integrity through repeated use and installation.
• Fine UNRF thread design allows for finer adjustment and improved load distribution, ideal for applications requiring precise clamping force.
• Hex socket drive (5/32") enables high-torque installation with standard tools, facilitating efficient assembly and reducing strip-out risks.
• Compliance with environmental regulations (RoHS 3 and REACH) ensures safe use in regulated industries, supporting sustainability goals without compromising performance.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in machinery, automotive, and aerospace assemblies. The 10-32 UNRF fine thread and Class 3A fit provide superior clamping force and resistance to dynamic loads, making it ideal for precision equipment where reliability is critical. The partially threaded design allows for optimal grip in tapped holes, while the hex drive ensures easy installation in confined spaces. With a tensile strength of 170,000 psi and Rockwell C37 hardness, it withstands heavy-duty use, reducing downtime and replacement costs. The black-oxide surface treatment adds a protective layer against moisture and chemicals, extending service life in corrosive environments like manufacturing plants and outdoor applications.

Specification Summary & Compliance

This screw adheres to Class 3A thread fit for high precision and UNRF fine thread standards with a thread size of 10-32. It meets ASTM A574 specifications for socket head cap screws, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for environmental and health standards in industrial use.