S-97345A714 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 environments and chemical exposure
- High tensile and shear strength (70,000 psi tensile, 35,000 psi min shear) for reliable performance under heavy loads
- Precision Class 3A thread fit ensures smooth assembly and secure fastening with minimal backlash
- Knurled head design provides enhanced grip for manual adjustments and prevents slipping during installation
- Long 1 1/4" shoulder length offers stable bearing surface for precise component alignment and rotation
- Hex socket drive (1/4") allows for high-torque installation in confined spaces with standard tools
- Compliance with ASME B18.3 and environmental standards guarantees quality, safety, and regulatory adherence
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and industrial equipment. The UNC coarse threads and Class 3A fit provide rapid assembly with high vibration resistance, reducing maintenance downtime. The knurled socket head enhances tool engagement, preventing cam-out during high-torque applications. With its corrosion-resistant properties, it excels in environments exposed to moisture, chemicals, or extreme temperatures, ensuring long-term reliability in robotics, conveyor systems, and pivoting mechanisms. The precise shoulder diameter and length maintain accurate component positioning, eliminating misalignment and wear in rotational assemblies.
Specification Summary & Compliance
This shoulder screw features 3/8"-16 UNC coarse threads with Class 3A tolerance for precise fit. Shoulder diameter is 1/2" with a tolerance of -0.004" to -0.002", and shoulder length is 1 1/4" with a tolerance of -0.005" to 0.005". It conforms to ASME B18.3 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.
