S-8077A269 7/8"-9 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 and black oxide finish, ideal for harsh environments and extended service life.
- Enhanced assembly precision through Class 3A thread fit, ensuring tight tolerances and reliable fastening in critical applications.
- High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding, heavy-duty industrial use.
- Secure, non-slip installation with a knurled head and 5/8" hex drive, providing excellent grip and torque application.
- Consistent dimensional accuracy with precise shoulder diameter and length tolerances, facilitating smooth assembly and alignment.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
- Durable performance backed by Rockwell B79 hardness, resisting wear and maintaining integrity under stress.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with a black oxide finish is engineered to address common industrial challenges such as corrosion, misalignment, and mechanical failure. The UNC coarse thread and Class 3A fit provide secure, vibration-resistant connections in heavy machinery, automotive assemblies, and precision equipment. The knurled head and hex drive enable easy installation even in tight spaces, reducing assembly time and improving workflow efficiency. Its high tensile and shear strength ensures reliability in dynamic loads, while the shoulder design supports accurate component positioning, minimizing wear and extending the lifespan of connected parts in demanding applications.
Specification Summary & Compliance
This shoulder screw adheres to Class 3A thread fit for precise UNC threading, with shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It meets ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry-standard performance.
