S-97345A632 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 316 stainless steel construction, ideal for harsh industrial and marine environments.
- Precise component alignment ensured by the 1 1/4" shoulder length with tight tolerances for reliable assembly.
- High-strength performance delivering 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications.
- Secure and efficient installation with a knurled socket head and 3/16" hex drive, preventing tool slippage.
- Reliable thread engagement from the 5/16"-18 UNC coarse thread with Class 3A fit, reducing cross-threading risks.
- Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability.
- Environmental and safety adherence with RoHS 3 and REACH compliance for sustainable and safe usage.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical failure. The UNC coarse thread and Class 3A fit provide excellent vibration resistance and easy assembly in high-stress environments like machinery, automotive systems, and precision instruments. The knurled socket head with a hex drive ensures secure torque application, reducing installation errors. Its robust shoulder design maintains precise part spacing and rotational stability, making it ideal for pivots, axles, and guides where durability and accuracy are critical. This screw's high tensile and shear strength supports heavy-duty applications, extending equipment lifespan and reducing maintenance costs.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC thread with Class 3A fit for precise thread engagement, and a shoulder diameter of 3/8" with tight tolerances (e.g., -0.004" to -0.002"). It complies with ASME B18.3 specifications for dimensional accuracy and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are adhered to in industrial use.
