S-91273A943 3/8"-16 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 from 18-8 stainless steel with black oxide finish, ideal for harsh industrial environments.
- Enhanced durability and wear resistance due to Rockwell B55 hardness, extending service life under repetitive loads.
- High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable performance in demanding applications.
- Secure and non-slip installation provided by the knurled head and hex drive, ensuring precise torque application.
- Accurate alignment and spacing thanks to the precision 1" shoulder with tight diameter tolerance, reducing assembly errors.
- Easy and quick assembly with UNC coarse threading and Class 2A fit, facilitating faster installation in various materials.
- Compliance with global regulations including RoHS 3 and REACH, ensuring safe and sustainable use in international markets.
Professional Applications & Engineering Value
This 3/8"-16 UNC shoulder screw is engineered to address common industrial challenges such as component misalignment and corrosion-induced failure. The 18-8 stainless steel construction, combined with a black oxide finish, provides excellent resistance to rust and chemicals, making it suitable for machinery, automotive, and electronics where environmental factors are a concern. The precision shoulder ensures accurate positioning in assemblies, while the coarse thread and Class 2A fit offer reliable fastening in materials like metals and plastics. Its socket head with hex drive allows for easy access in confined spaces, reducing installation time and improving overall efficiency in production lines.
Specification Summary & Compliance
This shoulder screw features a Class 2A thread fit with UNC coarse threading, ensuring dimensional accuracy and interchangeability. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005" for precise engineering applications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for global industrial use.
