S-8077A598 5/16"-18 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.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress loads.
- Precise alignment and secure fit ensured by the Class 3A thread fit and standard shoulder, reducing assembly errors and improving component stability.
- Enhanced durability and wear resistance from the black oxide finish and Rockwell B79 hardness, extending service life in demanding applications.
- Easy installation and removal with the hex socket drive and knurled head, providing a secure grip and reducing tool slippage.
- Broad regulatory compliance meeting ASME B18.3 standards, RoHS 3, and REACH, ensuring safety and environmental responsibility.
- Versatile coarse UNC threading for quick assembly and disassembly, suitable for various machinery and equipment setups.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with a black oxide finish is engineered to address critical challenges in precision machinery, automation systems, and industrial equipment. Its robust UNC coarse thread and Class 3A thread fit ensure tight tolerances and reliable fastening, minimizing vibration-induced loosening in high-speed operations. The knurled head and hex socket drive facilitate easy handling and torque application, reducing installation time and tool wear. Ideal for applications requiring corrosion resistance and high tensile strength, such as pivot points, bearing mounts, and linkage assemblies, this screw enhances operational efficiency and longevity in sectors like aerospace, automotive, and manufacturing, where precision and durability are paramount.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, featuring a Class 3A thread fit for precise dimensional accuracy and a shoulder diameter tolerance of -0.004" to -0.002". It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial use.
