S-97345A567 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 environments and extended service life.
- High-strength performance with 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing in demanding applications.
- Precise assembly and alignment ensured by the Class 3A thread fit and standard shoulder for reduced play and improved component positioning.
- Secure, non-slip fastening provided by the knurled socket head and 5/32" hex drive, allowing for high-torque installation.
- Robust coarse threading with 1/4"-20 UNC specification for faster installation and better resistance to vibration loosening.
- Compliance with industry standards including ASME B18.3, ensuring interchangeability and reliability in professional applications.
- Environmental and safety compliance with RoHS 3 and REACH, making it suitable for regulated industries.
Professional Applications & Engineering Value
This 316 Stainless Steel shoulder screw is engineered to address critical challenges in precision assemblies, such as in machinery, automotive, and aerospace components. The Class 3A thread fit and UNC coarse thread provide excellent vibration resistance and ease of assembly, reducing the risk of thread stripping in high-stress environments. The knurled socket head and hex drive design allow for secure tool engagement, minimizing cam-out during high-torque applications. Its corrosion-resistant properties make it ideal for use in moist or chemical-exposed settings, ensuring long-term durability and reducing maintenance costs. By meeting ASME B18.3 standards, this screw guarantees consistent performance and compatibility in industrial shoulder screw applications, supporting efficient production and reliable operation.
Specification Summary & Compliance
This shoulder screw features a 1/4"-20 UNC coarse thread with Class 3A fit for precise thread engagement and dimensional accuracy. The shoulder diameter and length adhere to specified tolerances (e.g., shoulder diameter: -0.004" to -0.002"). It complies with ASME B18.3 manufacturing specifications and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it meets environmental and safety standards for industrial use.
