S-91205A714 1/2"-13 x 1 1/4" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws
Alloy Steel Thread-Locking Socket Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Vibration-resistant locking with nylon patch thread locker prevents loosening under dynamic loads, maintaining joint integrity from -70°F to 250°F
- Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications
- Precision Class 3A thread fit provides superior engagement and consistent clamping force in demanding assemblies
- Corrosion-resistant black-oxide finish on alloy steel extends service life in challenging environments
- Standard hex socket drive with 3/8" drive size enables high-torque installation in confined spaces
- Full compliance with ASME B18.3 and ASTM A574 guarantees dimensional accuracy and material quality
- RoHS 3 and REACH compliant meeting international environmental and safety standards
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this socket head cap screw combines black-oxide alloy steel construction with advanced nylon patch thread locking technology to solve critical fastening challenges. The 1/2"-13 UNC coarse thread configuration ensures rapid installation while maintaining Class 3A precision for secure fitment in heavy machinery, automotive systems, and structural assemblies. With 170,000 psi tensile strength and Rockwell C37 hardness, this fastener withstands extreme mechanical stresses while the temperature-resistant thread locker prevents vibration-induced loosening in dynamic environments. Ideal for high-vibration applications where reliability is paramount, from manufacturing equipment to aerospace components.
Specification Summary & Compliance
This socket head cap screw features Class 3A thread fit per UNC standards with 1/2"-13 coarse thread spacing and fully threaded design. Manufactured to ASME B18.3 specifications using ASTM A574 alloy steel, ensuring dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, with black-oxide surface treatment providing corrosion resistance. The nylon patch thread locker maintains effectiveness across the specified temperature range of -70°F to 250°F.
