S-90346A112 4-40 x 3/8" ASME B18.3 High-Strength 316 Stainless Steel Socket Head Screws
High-Strength 316 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 316 Stainless Steel construction, ideal for harsh environments and chemical exposure
- Exceptional mechanical strength delivering 110,000 psi tensile strength for reliable load-bearing in high-stress assemblies
- Precise Class 3A thread fit ensures tighter tolerances and secure fastening with minimal backlash in precision equipment
- Enhanced durability from cold-worked fabrication and Rockwell C25 hardness, providing excellent wear resistance and longevity
- Optimized drive engagement with standard hex socket head and 3/32" drive size for efficient installation and high torque application
- Broad compatibility through 4-40 UNC coarse right-hand threading, suitable for common industrial components and repairs
- Regulatory confidence with full compliance to ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this 316 Stainless Steel Socket Head Cap Screw addresses critical challenges like corrosion, vibration loosening, and mechanical fatigue. The cold-worked fabrication enhances grain structure, providing consistent Rockwell C25 hardness and superior resistance to deformation under load. With a 4-40 UNC coarse thread and Class 3A fit, it ensures rapid assembly and reliable clamping force in machinery, automotive systems, and marine equipment. The hex drive design allows for flush mounting and high-torque fastening in confined spaces, reducing installation time and improving operational reliability in industrial fastening applications.
Specification Summary & Compliance
This screw adheres to ASME B18.3 specifications, with precise Class 3A thread fit and UNC coarse threading for consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards. Manufactured in the inch system, it features a 3/8" length and fully threaded design for uniform stress distribution and ease of use in various assembly contexts.
