S-91205A732 5/8"-11 x 2" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with integrated nylon patch thread locker, maintaining secure fastening from -70° to 250°F in demanding environments
• Exceptional mechanical strength with 170,000 psi tensile strength and Rockwell C37 hardness for heavy-duty applications
• Precision thread engagement through Class 3A UNC coarse threads ensuring reliable fit and reduced cross-threading risks
• Corrosion-resistant black-oxide finish on alloy steel for enhanced durability in industrial settings
• High-torque capability with 1/2" hex drive socket head design for efficient installation and removal
• Full thread coverage along the 2" length providing maximum grip and load distribution
• Regulatory compliance assurance meeting ASME B18.3, ASTM A574, RoHS 3, and REACH standards

Professional Applications & Engineering Value

Engineered for high-stress industrial assemblies, these black-oxide alloy steel socket head cap screws deliver critical performance where vibration resistance and structural integrity are paramount. The Class 3A UNC coarse threads provide superior engagement in soft materials and rapid installation, while the nylon patch thread locker eliminates the need for separate locking components in machinery, automotive, and heavy equipment applications. With 170,000 psi tensile strength and thermal stability from -70° to 250°F, these fully threaded fasteners maintain clamp force under dynamic loads, preventing joint failure in critical connections. The 1/2" hex drive accommodates high torque values for secure mounting in confined spaces where wrench clearance is limited.

Specification Summary & Compliance

Manufactured to precision Class 3A thread fit with UNC coarse thread profile (5/8"-11) and 2" fully threaded length. Complies with ASME B18.3 dimensional specifications and ASTM A574 material standards for alloy steel socket head cap screws. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance for restricted substances. Black-oxide surface treatment provides corrosion protection while maintaining dimensional accuracy for reliable performance in industrial fastening applications.