S-90807A125 5/16"-18 Shoulder Screws
Shoulder 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 140,000 psi tensile strength for reliable performance in high-stress applications
- Precise thread engagement with Class 3A fit ensuring secure fastening and vibration resistance
- Enhanced corrosion protection through black oxide finish extending service life in demanding environments
- Superior material durability from alloy steel construction with Rockwell C32 hardness for long-term reliability
- Secure installation and removal with knurled socket head design preventing tool slippage
- Optimized shoulder dimensions providing accurate alignment and spacing in assembly applications
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use
Professional Applications & Engineering Value
This alloy steel shoulder screw delivers critical engineering solutions where precision alignment and high-strength fastening are paramount. The 5/16"-18 UNC coarse threads with Class 3A precision fit ensure rapid assembly while maintaining vibration resistance in machinery, automotive, and industrial equipment. The black oxide finish provides essential corrosion protection for extended service life in challenging environments. The knurled socket head with 5/32" hex drive enables secure torque application without cam-out, while the precisely machined shoulder maintains component spacing in rotating assemblies, pivoting mechanisms, and precision guides. Engineered for industrial shoulder bolt applications requiring both structural integrity and dimensional accuracy.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse thread specifications. Shoulder diameter maintains tight tolerance of -0.004" to -0.002" with shoulder length tolerance of -0.005" to 0.005" for precise component alignment. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance for industrial applications.
