S-94967A691 1/4"-20 x 5/8" 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
- Exceptional load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion protection through black corrosion-resistant coating, extending service life in harsh environments
- Precise thread engagement with Class 2A UNC coarse threads ensuring easy installation and vibration resistance
- High-strength Grade 5 classification providing consistent mechanical properties and Rockwell C25 hardness
- Full threading design offering maximum grip length and uniform stress distribution
- External hex drive compatibility allowing standard tool usage and high torque application
- Regulatory compliance assurance meeting industrial standards and environmental regulations
Professional Applications & Engineering Value
These Grade 5 hex head screws deliver critical engineering solutions for industrial assembly challenges. The black corrosion-resistant coated steel construction provides essential protection against environmental degradation, while the UNC coarse thread design ensures rapid installation and reliable performance in vibration-prone applications. With 120,000 psi tensile strength and full threading, these fasteners maintain structural integrity under heavy loads, making them ideal for machinery, equipment manufacturing, and structural frameworks. The combination of external hex drive and precise Class 2A thread fit enables efficient assembly processes while minimizing the risk of stripping or cross-threading in production environments.
Specification Summary & Compliance
Manufactured to exact dimensional standards with Class 2A thread fit and UNC coarse thread specifications. Complies with ASME B18.2.1 dimensional requirements, ASTM B117 salt spray testing, and SAE J429 mechanical properties for Grade 5 fasteners. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards, ensuring suitability for regulated industrial applications worldwide.
