S-90152A116 4-40 x 1/2" ASME B18.3, ASTM F837 Stainless Steel Wire-Lockable Socket Head Screws
Stainless Steel Wire-Lockable 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 environments and long-term reliability.
- Exceptional tensile strength rated at 80,000 psi, ensuring secure fastening under high-stress industrial conditions.
- Precision Class 3A thread fit for tight tolerances and reliable engagement in critical assemblies.
- High hardness (Rockwell B70) provides excellent wear resistance and reduces stripping during installation.
- Compact 3/32" hex drive allows for easy installation in confined spaces with standard tools.
- Full threading along the 1/2" length offers maximum adjustability and holding power.
- Compliance with ASME B18.3 and RoHS 3 ensures consistent quality and environmental safety.
Professional Applications & Engineering Value
This 4-40 UNC thread socket head cap screw is engineered to address common industrial challenges, such as vibration loosening and material degradation. The 18-8 stainless steel composition delivers outstanding corrosion resistance, making it suitable for applications in machinery, electronics, and outdoor equipment where exposure to moisture or chemicals is a concern. Its coarse thread spacing and Class 3A fit provide quick assembly and reliable performance in high-vibration environments, reducing maintenance needs. The right-hand thread design and fully threaded body ensure uniform load distribution, enhancing joint integrity in precision engineering projects. Ideal for securing components in tight spaces, this screw combines durability with ease of use, supporting efficient production and long service life.
Specification Summary & Compliance
This screw features a 4-40 UNC thread with Class 3A precision fit and coarse spacing for reliable fastening. It meets ASME B18.3 specifications (ASTM F837) and is RoHS 3 (2015/863/EU) Compliant, ensuring adherence to industry standards and environmental regulations. Dimensions include a 1/2" length, 3/32" hex drive, and standard socket head profile, providing consistent performance in professional applications.
