S-97345A447 10-32 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 316 stainless steel construction, ideal for harsh industrial and marine environments.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance in high-stress applications.
- Precise alignment and spacing ensured by the Class 3A thread fit and standard shoulder, reducing assembly errors and improving component fit.
- Enhanced grip and tool engagement from the knurled socket head and hex drive, preventing slippage during installation and maintenance.
- Long-lasting durability with Rockwell B79 hardness, resisting wear and deformation under repeated use.
- Broad compatibility with UNF fine threads (10-32) and compliance to ASME B18.3, ensuring interchangeability and standardization.
- Safe and eco-friendly design meeting RoHS 3 and REACH regulations, suitable for global supply chains and sensitive applications.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automotive assemblies, and electronic enclosures. Its 10-32 UNF fine thread and Class 3A fit provide tight tolerances that minimize backlash and vibration, essential for maintaining alignment in rotating parts. The knurled socket head enhances torque transmission, reducing the risk of stripping during high-torque fastening. With a 2-1/8" shoulder length and 1/4" shoulder diameter, it acts as a reliable pivot or spacer, supporting axial loads while resisting corrosion from chemicals and moisture. Ideal for applications demanding high tensile strength and regulatory compliance, this screw ensures long-term reliability in demanding industrial settings.
Specification Summary & Compliance
The screw features a Class 3A thread fit for precise engagement, with shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005" to ensure consistent performance. Manufactured in accordance with ASME B18.3 standards, it guarantees dimensional accuracy and interoperability. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable use across various industries.
