S-97768A362 5/16"-18 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 18-8 Stainless Steel construction and Black Oxide finish, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high stress
- Precise alignment and smooth rotation ensured by the 3/8" shoulder diameter with tight tolerances for accurate component positioning
- Secure fastening and easy installation with Class 3A thread fit and 3/16" hex drive, reducing assembly time and preventing stripping
- Enhanced grip and torque application from the knurled head and socket head design, minimizing slippage during tightening
- Broad compatibility and durability with UNC coarse threads and Rockwell B55 hardness, suitable for repetitive use in machinery
- Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for safe, global industrial use
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical alignment and load-bearing challenges in mechanical assemblies. The 18-8 Stainless Steel material and Black Oxide finish provide excellent corrosion resistance, extending service life in humid or chemically exposed settings like automotive and manufacturing equipment. The 3/8" shoulder diameter with precise tolerances ensures components such as gears and pulleys rotate freely without misalignment, reducing wear. Combined with UNC coarse threads and Class 3A fit, it offers vibration resistance and quick installation in high-stress applications, from robotics to conveyor systems, enhancing operational reliability and minimizing maintenance downtime.
Specification Summary & Compliance
This shoulder screw adheres to tight dimensional standards, including a Class 3A thread fit for superior engagement and a shoulder diameter tolerance of -0.004" to -0.002" for accuracy. It conforms to ASME B18.3 manufacturing specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial use.
