S-92196A121 4-40 x 2" 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 from 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for high-stress applications.
- Precise, reliable fastening ensured by Class 3A thread fit, minimizing the risk of loosening under vibration.
- Optimized for secure installations with a partially threaded design that provides maximum grip in tapped holes.
- Industry-standard compatibility via UNC coarse threading and ASME B18.3 compliance for consistent performance.
- Easy installation and removal using a standard 3/32" hex key, thanks to the socket head design.
- Environmentally responsible manufacturing meeting RoHS 3 and REACH standards for safe, sustainable use.
Professional Applications & Engineering Value
This 4-40 UNC Thread Socket Head Cap Screw is engineered to solve critical fastening challenges in demanding sectors like aerospace, automotive assembly, and precision machinery. The 18-8 Stainless Steel material provides excellent resistance to rust and oxidation, which is vital for components exposed to moisture or chemicals. Its partially threaded configuration and Class 3A thread fit deliver superior clamp load and vibration resistance, preventing joint failure in dynamic environments. The coarse thread spacing (UNC) allows for quicker installation and better performance in softer materials or where debris is a concern. With a 2-inch length and hex drive socket head, it offers deep reach and reliable torque transmission, making it a top choice for engineers who prioritize durability, precision, and compliance with ASME B18.3 standards.
Specification Summary & Compliance
This screw features a 4-40 UNC coarse thread with a Class 3A precision thread fit, ensuring tight tolerances and reliable engagement. It is manufactured in compliance with ASME B18.3 specifications and meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006). The product is made from 18-8 Stainless Steel, offering a tensile strength of 70,000 psi and a hardness of Rockwell B70, confirming its suitability for high-performance industrial applications.
