S-92196A163 3-56 x 1/8" ASME B18.3 18-8 Stainless Steel Socket Head Screws
18-8 Stainless Steel Socket Head 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, ideal for harsh or humid environments.
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration.
- Precise Class 3A thread fit provides excellent engagement and reduces the risk of cross-threading.
- Fine UNF thread design offers better adjustment control and superior holding power in fine-pitch applications.
- Compact socket head and 5/64" hex drive allow for easy installation in confined spaces with standard tools.
- Full threading along the 1/8" length maximizes grip and fastener distribution across the entire engagement area.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees consistent quality and environmental safety for global supply chains.
Professional Applications & Engineering Value
This 3-56 UNF socket head cap screw is engineered to address critical challenges in precision assembly and high-stress applications. The 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, making it suitable for electronics, medical devices, and marine equipment. The fine thread and Class 3A fit ensure minimal backlash and secure fastening in thin materials or finely-tuned mechanisms, reducing the risk of loosening under dynamic loads. Its compact socket head design with a 5/64" hex drive facilitates tool access in tight spaces, streamlining installation in complex machinery or compact enclosures. These features collectively enhance assembly reliability, maintenance efficiency, and long-term performance in demanding industrial settings.
Specification Summary & Compliance
This screw adheres to ASME B18.3 specifications, ensuring dimensional accuracy and interchangeability. The 3-56 UNF fine thread is manufactured to Class 3A tolerance for precise fit, while the fully threaded 1/8" length provides consistent engagement. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable procurement practices.
