S-8077A293 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
- Exceptional corrosion resistance with 316 stainless steel construction and black oxide finish, ideal for harsh industrial environments
- Precise shoulder alignment with Class 3A thread fit and standard shoulder fit, ensuring accurate component positioning
- High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding applications
- Secure torque transmission through hex socket drive and knurled head design, preventing slippage during installation
- Standardized dimensions per ASME B18.3 with UNC coarse threads for reliable compatibility and interchangeability
- Enhanced durability with Rockwell B79 hardness, maintaining performance under repetitive loads
- Regulatory compliance with RoHS 3 and REACH standards, meeting international environmental and safety requirements
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with black oxide finish addresses critical engineering challenges in precision machinery and industrial equipment. The 3-1/2" shoulder length provides stable rotational alignment for gears, pulleys, and linkages, while the Class 3A thread fit ensures vibration-resistant fastening in high-stress assemblies. The coarse UNC threads facilitate quick installation in production environments, and the knurled socket head allows for secure tool engagement during maintenance. Ideal for industrial fastening applications requiring corrosion resistance and dimensional stability, this component delivers reliable performance in automotive, manufacturing, and marine sectors where precision shoulder alignment is paramount.
Specification Summary & Compliance
Manufactured to ASME B18.3 standards with Class 3A thread fit and precise shoulder diameter tolerance (-0.004" to -0.002"). Features 3/8"-16 UNC coarse threads with right-hand direction and standard shoulder fit. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence.
