S-92620A116 5/16"-32 x 1" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel 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 capacity with Grade 8 strength rating and 150,000 psi tensile strength for critical structural applications
- Superior corrosion protection through zinc yellow-chromate plating that withstands harsh industrial environments
- Precise thread engagement with UNEF extra fine spacing and Class 2A fit ensuring vibration resistance and secure fastening
- Enhanced installation control via external hex drive design that accommodates standard tools and prevents stripping
- Exceptional durability from Rockwell C33 hardness that maintains integrity under repeated stress cycles
- Full-threaded design providing consistent clamping force along the entire 1" length for uniform load distribution
- Industry compliance assurance meeting ASME B18.2.1 and SAE J429 specifications for reliable performance standards
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical engineering solutions where vibration resistance and high tensile requirements are paramount. The UNEF thread spacing (5/16"-32) provides superior holding power in thin materials and precision assemblies, while the zinc yellow-chromate finish offers enhanced corrosion protection for automotive, machinery, and industrial equipment exposed to demanding conditions. The external hex drive ensures reliable installation torque transmission, preventing cam-out during high-tension applications. Engineered with fully threaded construction and Class 2A fit, these fasteners maintain consistent clamping force across the entire engagement length, making them ideal for critical joints in structural frameworks, heavy equipment, and precision manufacturing where failure is not an option.
Specification Summary & Compliance
Manufactured to exact inch system dimensions with Class 2A thread fit tolerance ensuring precise engagement. Complies with ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. Features UNEF (Unified Extra Fine) thread form with right-hand direction and Rockwell C33 hardness verification. The zinc yellow-chromate plating provides RoHS-compliant corrosion protection while maintaining the fastener's structural integrity under extreme mechanical stress conditions.
