S-92865A157 5/16"-18 x 1 1/8" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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
- Exceptional load-bearing capability with 120,000 PSI tensile strength and Grade 5 classification for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in various industrial environments
- Optimized fastening efficiency with UNC coarse threading that prevents cross-threading and enables quick installation
- Enhanced torque transmission via external hex drive design that provides secure tool engagement and prevents stripping
- Precision thread fit with Class 2A tolerance ensuring consistent engagement and vibration resistance
- Versatile partial threading allowing unthreaded shank sections for precise clamp load distribution
- Industry-compliant manufacturing meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interchangeability
Professional Applications & Engineering Value
These Grade 5 hex head screws deliver critical engineering solutions where high tensile strength and reliable fastening are paramount. The zinc plated steel construction provides essential corrosion protection for industrial equipment, machinery assembly, and structural applications exposed to moderate environmental conditions. The UNC coarse thread design significantly reduces installation time while preventing cross-threading errors in production environments. With partial threading and Rockwell C25 hardness, these fasteners maintain clamp force integrity under vibration and dynamic loads, making them ideal for automotive components, construction frameworks, and heavy-duty manufacturing applications where 120,000 PSI tensile strength ensures joint integrity under substantial mechanical stress.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 5/16"-18 UNC coarse threading and 1-1/8" length. These hex head screws conform to ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical performance. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances above threshold limits.
