S-90124A335 1/2"-13 x 2" ASME B18.2.1, SAE J429 Steel Wire-Lockable Hex Head Screws
Steel Wire-Lockable Hex 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
- Enhanced Durability: Black-oxide steel construction provides superior corrosion resistance, extending service life in harsh industrial environments.
- High Tensile Strength: Grade 5 classification with 120,000 psi tensile strength ensures reliable performance under heavy loads and vibration.
- Secure Fastening: UNC coarse thread spacing and Class 2A thread fit offer excellent grip and resistance to loosening in demanding applications.
- Optimized Torque Application: External hex drive and 3/4" head width allow for high torque application with standard tools, preventing stripping.
- Versatile Partial Threading: Partially threaded design with 1 1/4" minimum thread length provides both clamping force and unthreaded shank strength.
- Industry Compliance: Meets ASME B18.2.1 specifications and RoHS 3 regulations, ensuring quality and environmental compliance for professional use.
- Consistent Hardness: Rockwell C25 hardness rating guarantees uniform material strength and wear resistance across all fasteners.
Professional Applications & Engineering Value
These Grade 5 hex head screws deliver exceptional engineering value through their black-oxide steel composition and UNC coarse thread design. The partial threading configuration provides optimal stress distribution, making them ideal for structural applications where both clamping force and shear strength are critical. The external hex drive ensures compatibility with standard industrial tools while the Class 2A thread fit maintains precise tolerances for consistent performance. These screws are engineered to withstand vibration and heavy loads in construction, machinery assembly, and automotive applications, offering reliable fastening solutions that reduce maintenance frequency and improve operational safety.
Specification Summary & Compliance
This 1/2"-13 hex head screw features Class 2A thread fit with UNC coarse spacing and partial threading. Manufactured to ASME B18.2.1 specifications meeting SAE J429 requirements, with Grade 5 strength classification (120,000 psi tensile strength, Rockwell C25 hardness). Compliant with RoHS 3 (2015/863/EU) environmental regulations for industrial use.
