S-8077A618 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 environments and extended service life.
- Enhanced durability and wear resistance from the Black Oxide finish, providing a protective layer against abrasion.
- High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under heavy loads.
- Precise and secure fastening with Class 3A thread fit and UNC coarse threads for quick assembly and vibration resistance.
- Easy installation and grip thanks to the knurled socket head and standard hex drive, reducing tool slippage.
- Accurate alignment and spacing provided by the precision shoulder, maintaining component positioning in assemblies.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
Professional Applications & Engineering Value
This 316 Stainless Steel Shoulder Screw with a Black Oxide finish is engineered to address critical challenges in industrial settings, such as corrosion, misalignment, and mechanical stress. The UNC coarse threads and Class 3A thread fit enable rapid, secure fastening in machinery, reducing assembly time and minimizing loosening from vibrations. Its robust tensile strength of 70,000 psi and shear strength of 35,000 psi make it suitable for high-load applications in automotive, aerospace, and manufacturing equipment. The knurled socket head enhances grip during installation, while the precision shoulder ensures accurate alignment in pivots, bearings, and linkages, preventing wear and extending component life in demanding environments.
Specification Summary & Compliance
This shoulder screw features precise dimensions, including a thread size of 5/16"-18 UNC with Class 3A thread fit for tight tolerances, and shoulder diameter and length tolerances ensuring consistent performance. It is manufactured in compliance with ASME B18.3 standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and safe industrial use.
