S-8077A122 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 industrial environments and chemical exposure
- Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance under heavy use
- High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications
- Precise alignment and smooth rotation ensured by the Class 3A thread fit and standard shoulder fit, reducing assembly errors
- Secure and non-slip installation with a knurled socket head and 1/2" hex drive, allowing for high-torque applications
- Reliable dimensional stability from tight shoulder tolerances (diameter: -0.004" to -0.002", length: -0.005" to 0.005")
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence
Professional Applications & Engineering Value
This 3/4"-10 UNC shoulder screw in 316 stainless steel with a black oxide finish is engineered to address critical industrial challenges such as misalignment, corrosion, and mechanical stress. The coarse UNC thread and Class 3A thread fit provide secure fastening in high-vibration environments, while the 1" shoulder length and precise tolerances ensure accurate positioning in machinery, robotics, and automotive assemblies. Its Rockwell B79 hardness and high tensile and shear strength make it suitable for heavy-duty applications, reducing downtime and maintenance costs. Ideal for use in industrial equipment, conveyor systems, and precision instruments, this screw offers reliable performance where durability and compliance with ASME B18.3 standards are essential.
Specification Summary & Compliance
This shoulder screw features a Class 3A thread fit with UNC coarse threads and tight shoulder diameter and length tolerances for precision assembly. It meets ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry-standard reliability.
