S-8077A111 3/4"-10 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 chemical exposure.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding, high-load applications.
- Precise, reliable assembly ensured by Class 3A thread fit and UNC coarse threading for quick, secure fastening.
- Enhanced durability and wear resistance from the black oxide finish and Rockwell B79 hardness, extending service life.
- Secure, non-slip handling with a knurled socket head and 1/2" hex drive, allowing for high-torque installation.
- Accurate component alignment provided by the precision shoulder with tight diameter and length tolerances.
- Full regulatory compliance with ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in industrial settings, such as misalignment, corrosion, and mechanical stress. The black oxide finish enhances corrosion resistance, making it suitable for marine, chemical processing, and outdoor equipment. Its UNC coarse thread and Class 3A fit ensure quick, reliable fastening in high-vibration environments, reducing assembly time and maintenance. The precision shoulder diameter and length provide stable bearing surfaces for rotating parts, minimizing wear in machinery, automotive, and aerospace applications. With high tensile and shear strength, it supports heavy-duty uses where failure is not an option, delivering long-term reliability and performance.
Specification Summary & Compliance
This shoulder screw features a 3/4"-10 UNC coarse thread with Class 3A fit for precise tolerances, and a shoulder diameter of 1" with tight tolerances (-0.004" to -0.002") and length of 1" (±0.005"). It meets ASME B18.3 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial applications.
