S-92620A407 8-32 x 3/8" SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capacity - With 150,000 psi tensile strength and Grade 8 classification, these screws withstand extreme mechanical stresses in demanding applications.
• Superior Corrosion Protection - Zinc yellow-chromate plating provides enhanced rust resistance, extending service life in harsh industrial environments.
• Optimized Thread Engagement - Coarse UNC threads with Class 2A fit ensure reliable fastening and vibration resistance while simplifying installation.
• Maximum Thread Utilization - Fully threaded design offers consistent clamping force along the entire 3/8" length for uniform load distribution.
• High-Durability Construction - Rockwell C33 hardness maintains structural integrity under repeated stress and prevents thread deformation.
• Industry-Standard Compliance - SAE J429 specification guarantees consistent quality and performance for critical assembly requirements.
• Efficient Installation & Removal - External hex drive with 1/4" head width allows for standard tool compatibility and high-torque application.

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical performance in heavy machinery, automotive assemblies, and structural frameworks where high tensile strength and vibration resistance are paramount. The 8-32 UNC coarse thread configuration prevents cross-threading during high-speed assembly while maintaining secure fastening in materials prone to thermal expansion. Zinc yellow-chromate plating creates a sacrificial barrier against chemical exposure and moisture, making these steel fasteners ideal for outdoor equipment and manufacturing environments. The fully threaded design ensures maximum surface contact in blind holes and through-holes, distributing shear forces evenly across the entire 3/8" length to prevent point failures in dynamic load conditions.

Specification Summary & Compliance

Manufactured to SAE J429 standards with Class 2A thread fit tolerances ensuring precise dimensional accuracy. The UNC coarse thread profile (8-32 size) maintains compatibility with standard industrial components. These hex head screws comply with RoHS and REACH environmental regulations while meeting Grade 8 mechanical properties including 150,000 psi tensile strength and Rockwell C33 hardness verification.