S-97345A103 4-40 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 environments and chemical exposure.
- High-strength performance offering 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing in demanding applications.
- Precise Class 3A thread fit ensures tight tolerances and secure fastening, reducing the risk of loosening under vibration.
- Secure hex socket drive (5/64") allows for high-torque installation and prevents tool slippage, enhancing assembly efficiency.
- Knurled head texture provides improved grip for manual adjustments and handling during installation.
- Coarse UNC thread enables quick assembly and disassembly, saving time in maintenance and production cycles.
- Compliance with RoHS 3 and REACH ensures environmental safety and meets international regulatory standards for industrial use.
Professional Applications & Engineering Value
This 4-40 UNC thread shoulder screw is engineered for precision alignment and rotational control in machinery, automation, and electronic assemblies. The 316 stainless steel material provides excellent resistance to corrosion from chemicals, saltwater, and high humidity, making it suitable for marine, pharmaceutical, and food processing equipment. The hex socket drive and Class 3A thread fit ensure reliable fastening in high-vibration environments, reducing maintenance downtime. With a knurled head for easy handling and a coarse thread for rapid installation, this fastener streamlines assembly processes while maintaining high tensile and shear strength for long-term durability in industrial applications.
Specification Summary & Compliance
This shoulder screw features a 4-40 UNC coarse thread with Class 3A fit for precise threading and secure engagement. Dimensions include a head diameter of 0.25", shoulder diameter of 1/8" with tolerance of -0.004" to -0.002", and thread length of 5/32". It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring adherence to environmental and safety regulations for industrial fasteners.
