S-90807A123 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 demanding applications
- Precision thread engagement with Class 3A fit ensures secure fastening and vibration resistance
- Enhanced corrosion protection through black oxide finish extends service life in industrial environments
- Superior grip and tool engagement with knurled socket head design prevents slippage during installation
- Accurate shoulder positioning with controlled diameter and length tolerances for precise component alignment
- Optimized for high-stress applications through Rockwell C32 hardness and alloy steel construction
- Regulatory compliance assurance with RoHS 3 and REACH standards for global industrial use
Professional Applications & Engineering Value
This alloy steel shoulder screw with black oxide finish addresses critical engineering challenges in precision machinery and industrial equipment. The 5/16"-18 UNC coarse threads with Class 3A fit provide exceptional vibration resistance in dynamic applications, while the precisely machined shoulder ensures accurate component alignment in assemblies requiring rotational or linear movement. The knurled socket head design prevents tool slippage during high-torque installation, reducing installation errors and maintenance downtime. Ideal for pivoting mechanisms, bearing retention, and precision spacing applications, this shoulder screw delivers reliable performance in automotive, manufacturing, and heavy equipment sectors where 140,000 psi tensile strength and corrosion resistance are paramount.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit and controlled shoulder tolerances (diameter: -0.004" to -0.002", length: -0.005" to 0.005"). Features UNC coarse threads with right-hand direction and standard shoulder fit. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial markets and restricted substance requirements.
