S-91273A602 5/16"-18 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 and black oxide finish, ideal for harsh industrial environments.
- High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under heavy loads.
- Precise thread engagement with Class 2A fit and 5/16"-18 UNC coarse threads, providing secure fastening and easy assembly.
- Enhanced grip and torque application from the knurled socket head and 5/32" hex drive, reducing slippage during installation.
- Accurate component alignment due to the 1 3/4" shoulder length with tight tolerances, minimizing misalignment in machinery.
- Durable wear resistance with Rockwell B55 hardness, extending service life in high-stress applications.
- Compliance with environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in global markets.
Professional Applications & Engineering Value
This shoulder screw is engineered to address common industrial challenges such as component misalignment, vibration loosening, and corrosion-induced failure. The 18-8 stainless steel material, combined with a black oxide finish, provides excellent resistance to rust and wear, making it suitable for automotive assemblies, machinery pivots, and conveyor systems. The 5/16"-18 UNC coarse threads and Class 2A fit ensure quick, secure fastening, while the knurled head and hex drive enhance torque control during installation. Its high tensile and shear strength supports heavy-duty applications, reducing maintenance needs and downtime in production environments.
Specification Summary & Compliance
This shoulder screw features precision dimensions, including a thread size of 5/16"-18 UNC with Class 2A fit for consistent engagement. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring accurate alignment. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.
