S-94967A457 5/16"-18 x 1" ASME B18.2.1, ASTM B117, 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
- Superior corrosion resistance with black protective coating extending service life in harsh industrial environments
- High-strength Grade 5 performance delivering 120,000 psi tensile strength for demanding applications
- Precision UNC coarse threading with Class 2A fit ensures reliable engagement and faster installation
- External hex drive design provides secure tool grip and high torque capability during assembly
- Full threading along 1" length offers maximum fastening flexibility and load distribution
- Rockwell C25 hardness rating maintains structural integrity under repeated stress and vibration
- Comprehensive regulatory compliance including RoHS 3 and REACH for global supply chain compatibility
Professional Applications & Engineering Value
These Grade 5 hex head screws with black corrosion-resistant coating address critical industrial challenges where environmental exposure and mechanical stress converge. The 5/16"-18 UNC coarse thread configuration prevents cross-threading while enabling rapid installation in production environments. Engineered with 120,000 psi tensile strength and Rockwell C25 hardness, these fully threaded fasteners maintain clamping force in high-vibration applications across machinery, structural assemblies, and heavy equipment. The external hex drive accommodates standard tools for maintenance accessibility, while the protective steel coating resists degradation from moisture, chemicals, and atmospheric conditions - significantly reducing replacement frequency and downtime in industrial operations.
Specification Summary & Compliance
Manufactured to Class 2A thread fit tolerances with UNC coarse threading (5/16"-18) and compliant with ASME B18.2.1, ASTM B117, and SAE J429 specifications. These 1" length hex head screws meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring global compliance for industrial distribution and use.
