S-97345A271 1/2"-13 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 industrial and marine environments
- Enhanced torque transmission and slip resistance from the knurled socket head and 5/16" hex drive
- Precise component alignment and reduced wear with a Class 3A thread fit for tight tolerances and secure fastening
- High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding applications
- Reliable performance in automated assembly with the 1/2"-13 UNC coarse thread for quick engagement and vibration resistance
- Consistent quality and interchangeability ensured by compliance with ASME B18.3 manufacturing standards
- Safe for regulated industries with RoHS 3 and REACH compliance, meeting environmental and safety requirements
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery and industrial equipment. The Class 3A thread fit and UNC coarse thread provide exceptional alignment and vibration resistance, reducing wear in high-cycle applications like rotating shafts, pivots, and assembly jigs. The knurled socket head with a 5/16" hex drive ensures maximum torque transmission without stripping, crucial for maintenance and automated systems. With a 70,000 psi tensile strength and corrosion-resistant material, it delivers long-term reliability in demanding environments such as chemical processing, food machinery, and marine hardware, minimizing downtime and replacement costs.
Specification Summary & Compliance
This shoulder screw features a 1/2"-13 UNC coarse thread with Class 3A fit for precise tolerances, a shoulder diameter of 5/8" with tight tolerance control, and a thread length of 3/4". It meets ASME B18.3 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards in industrial use.
