S-90019A360 3/8"-16 x 2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Thread-Locking Hex Head Screws
High-Strength Grade 8 Steel Thread-Locking 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
- Maximum Load-Bearing Capability with Grade 8 classification and 150,000 psi tensile strength for critical structural applications
- Superior Vibration Resistance through nylon patch thread locking technology that maintains integrity from -55° to 250°F
- Enhanced Corrosion Protection with zinc yellow-chromate plating for extended service life in harsh environments
- Optimized Torque Transmission via external hex drive design and 9/16" head width for secure tool engagement
- Precision Thread Engagement with UNC coarse threading and Class 2A fit ensuring reliable installation
- Exceptional Material Hardness at Rockwell C33 for superior wear resistance and durability
- Versatile Partial Threading allowing both clamping and alignment functions in assembly applications
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance where failure is not an option. The zinc yellow-chromate plated steel construction provides superior corrosion resistance for outdoor equipment, machinery, and structural assemblies exposed to environmental challenges. The innovative nylon patch thread locker technology eliminates the need for separate locking washers or adhesives, maintaining fastener integrity in high-vibration environments from automotive to construction applications. With 150,000 psi tensile strength and Rockwell C33 hardness, these 3/8"-16 UNC screws withstand extreme mechanical stresses while the coarse thread design ensures rapid installation and reliable performance in various materials.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with UNC coarse threading (3/8"-16) and partial threading configuration. Compliant with ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. The inch system measurement ensures compatibility with North American industrial standards, while the zinc yellow-chromate plating meets industry requirements for corrosion protection in demanding applications.
