S-91273A637 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 with 18-8 stainless steel construction, ideal for harsh industrial environments.
- Enhanced durability and wear resistance from the black oxide finish, providing a protective layer against abrasion.
- Precise component alignment with a 2 1/2" shoulder length, ensuring accurate positioning in assemblies.
- High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
- Secure and easy installation using a 3/16" hex drive and knurled head for improved grip and torque application.
- Reliable thread engagement with 3/8"-16 UNC coarse thread and Class 2A fit, reducing cross-threading risks.
- Compliance with environmental standards, meeting RoHS 3 and REACH regulations for safe and sustainable use.
Professional Applications & Engineering Value
This black oxide stainless steel shoulder screw is engineered to address critical alignment and strength requirements in precision machinery. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, making it suitable for applications in automotive, aerospace, and manufacturing equipment where environmental factors are a concern. The 2 1/2" shoulder length provides a stable bearing surface for rotating parts like gears and pulleys, minimizing misalignment and reducing wear. Combined with the 3/8"-16 UNC coarse thread and Class 2A fit, it ensures quick assembly and reliable performance under high vibration conditions. The hex drive and knurled head facilitate easy installation in tight spaces, enhancing efficiency in maintenance and production lines.
Specification Summary & Compliance
This shoulder screw features a 3/8" shoulder diameter with a tolerance of -0.004" to -0.002" and a 2 1/2" shoulder length with a tolerance of -0.005" to 0.005" for precise dimensional control. The UNC thread follows standard specifications with a Class 2A fit for consistent thread engagement. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.
