S-8077A327 3/8"-16 ASME B18.3 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
- Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
- Enhanced durability and wear resistance from the black oxide finish, reducing maintenance frequency
- Precise component alignment with 1/2" shoulder diameter and controlled tolerances for reduced assembly errors
- High-strength performance delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Secure installation and removal with hex socket drive and knurled head for superior grip and torque transmission
- Reliable thread engagement through Class 3A thread fit and UNC coarse threads for vibration resistance
- Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with black oxide finish addresses critical challenges in machinery assembly, pivoting mechanisms, and precision equipment. The 1/2" shoulder diameter provides exact bearing surfaces, eliminating misalignment in rotating parts like conveyor rollers or robotic arms. Its Class 3A thread fit and coarse UNC threads maintain clamping force under vibration, crucial for automotive and aerospace fixtures. The hex socket drive and knurled head enable secure tightening in confined spaces, while the material's inherent corrosion resistance ensures longevity in chemical processing or outdoor installations. These features collectively reduce downtime and enhance operational reliability in industrial fastening systems.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications, this shoulder screw maintains Class 3A thread fit with UNC 3/8"-16 threading and precise shoulder diameter tolerance of -0.004" to -0.002". The black oxide finish on 316 stainless steel provides consistent performance with 70,000 psi tensile strength. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial distribution.
