S-90124A324 3/8"-16 x 1 1/4" 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
- Superior corrosion resistance with black-oxide steel finish for extended service life in demanding environments
- Exceptional load-bearing capacity with Grade 5 classification and 120,000 psi tensile strength for heavy-duty applications
- Reliable thread engagement through UNC coarse threading and Class 2A fit for secure fastening in various materials
- Enhanced installation efficiency with external hex drive design allowing for high torque application
- Secure wire locking capability preventing loosening under vibration and dynamic loads
- Full thread coverage along the 1 1/4" length for maximum grip and adjustment flexibility
- Industry compliance assurance meeting ASME B18.2.1 standards and RoHS 3 environmental regulations
Professional Applications & Engineering Value
These Grade 5 hex head screws deliver critical performance in industrial assembly where vibration resistance and structural integrity are paramount. The black-oxide steel construction provides essential corrosion protection for machinery, equipment frames, and structural connections exposed to harsh operating conditions. The 3/8"-16 UNC coarse thread design ensures rapid installation and reliable holding power in steel, aluminum, and other common engineering materials. With Rockwell C25 hardness and 120,000 psi tensile strength, these fully threaded fasteners maintain clamp force under significant static and dynamic loads, making them ideal for automotive, construction, and heavy equipment applications where failure is not an option.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with UNC coarse threading (3/8"-16) and complies with ASME B18.2.1 manufacturing specifications where identified by SAE J429 standards. The fastener meets RoHS 3 (2015/863/EU) compliance requirements, ensuring environmental responsibility in industrial supply chains. Manufactured to inch system dimensions with 1 1/4" length and external hex drive configuration, these screws deliver consistent performance across applications requiring reliable, high-strength fastening solutions.
