S-97345A205 1/4"-20 ASME B18.3 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 industrial environments and outdoor applications.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress conditions.
- Precise Class 3A thread fit ensures tight tolerances and secure fastening, reducing the risk of loosening in critical assemblies.
- Easy installation and removal with a 5/32" hex socket drive and knurled head for improved grip and torque application.
- Durable coarse UNC threading provides quick assembly and resistance to vibration, suitable for repetitive use in machinery.
- Compliance with ASME B18.3 standards guarantees consistent quality and interchangeability in professional applications.
- Environmentally safe operation with RoHS 3 and REACH compliance, meeting strict regulatory requirements for hazardous substances.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address common industrial challenges, such as corrosion in chemical processing or marine settings, thanks to its high molybdenum content. The Class 3A thread fit and UNC coarse threads ensure rapid, secure fastening in high-vibration equipment like conveyor systems or automotive assemblies, minimizing downtime. With a knurled socket head and hex drive, it allows for easy torque application in confined spaces, enhancing assembly efficiency. Ideal for precision machinery, pivoting mechanisms, and industrial shoulder screw applications, it provides long-term reliability and reduced maintenance costs by resisting wear and environmental degradation.
Specification Summary & Compliance
This shoulder screw features a 1/4"-20 UNC thread with Class 3A fit for precise dimensional accuracy, ensuring tight assembly tolerances. It adheres to ASME B18.3 manufacturing standards, with a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005" for consistent performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental safety requirements, making it suitable for global industrial use.
