S-95362A509 5/8"-11 x 2" ASME B18.2.1, SAE J429, ASTM A354BD, MS90728-164 Mil. Spec. High-Strength Steel Hex Head Screws
Mil. Spec. High-Strength 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 150,000 psi tensile strength and Grade 8 classification for critical structural applications
- Superior corrosion resistance through zinc yellow-chromate plating that extends service life in harsh industrial environments
- Optimized torque transmission via external hex drive design that prevents tool slippage during high-torque installation
- Reliable thread engagement with fully threaded UNC coarse pattern that resists vibration loosening in heavy machinery
- Precise dimensional consistency through Class 2A thread fit ensuring smooth assembly and interchangeability
- Enhanced mechanical durability with Rockwell C33 hardness that maintains fastener integrity under extreme stress
- Regulatory compliance assurance meeting multiple industry standards for quality and environmental safety
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional engineering value in heavy machinery, structural steel connections, and industrial equipment assembly. The zinc yellow-chromate plated steel construction provides superior corrosion protection while maintaining the 150,000 psi tensile strength required for high-stress applications. The 5/8"-11 UNC coarse thread design ensures rapid installation and superior vibration resistance, while the external hex drive accommodates high-torque applications without cam-out. This combination addresses critical industrial challenges including joint integrity maintenance, corrosion prevention in outdoor applications, and reliable performance in dynamic loading conditions common in construction equipment and manufacturing machinery.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 5/8"-11 UNC coarse thread specifications. Complies with ASME B18.2.1, SAE J429, ASTM A354BD, and MS90728-164 manufacturing standards. Meets REACH (EC 1907/2006) compliance requirements for environmental safety. The Grade 8 classification ensures consistent mechanical properties including 150,000 psi tensile strength and Rockwell C33 hardness throughout production batches.
