S-97768A243 8-32 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 thread reliability due to Class 3A fit and UNC coarse thread, ensuring secure, vibration-resistant connections.
- High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for demanding heavy-duty applications.
- Enhanced torque transmission via the knurled socket head and 1/8" hex drive, reducing tool slippage and assembly time.
- Precision shoulder dimensions with tight tolerances for accurate alignment and smooth rotation in assemblies.
- Broad compliance with ASME B18.3, RoHS 3, and REACH, ensuring quality and environmental safety.
- Durable performance backed by Rockwell B55 hardness, offering long-term wear resistance.
Professional Applications & Engineering Value
This 8-32 UNC shoulder screw is engineered to address critical assembly challenges in machinery, automation, and precision equipment. The 18-8 Stainless Steel material combined with a black oxide finish provides excellent resistance to rust and chemicals, extending service life in moist or corrosive settings. Its Class 3A thread fit and coarse UNC thread ensure rapid installation and high clamping force, minimizing loosening under dynamic loads. The knurled socket head with a 1/8" hex drive enhances grip for efficient torque application, reducing the risk of stripping. Ideal for pivots, spacers, and rotating components, this screw offers reliable shoulder length and diameter tolerances for precise positioning, streamlining production and maintenance in industrial applications.
Specification Summary & Compliance
This shoulder screw adheres to tight dimensional standards, including a Class 3A thread fit for superior accuracy and UNC coarse threads per ASME specifications. The shoulder diameter and length maintain precise tolerances (e.g., diameter: -0.004" to -0.002", length: -0.005" to 0.005") to ensure consistent performance. It conforms to ASME B18.3 for design and manufacturing, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting safe and environmentally responsible usage.
