S-8077A777 1/2"-13 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 material, ideal for harsh industrial environments and extended service life.
- Enhanced durability and wear resistance from the Black Oxide finish, providing a protective layer against abrasion and galling.
- High-strength performance offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable load-bearing in demanding applications.
- Precise alignment and smooth rotation ensured by the 5/8" shoulder diameter with tight tolerances, reducing component wear.
- Secure and efficient installation with a 5/16" hex drive and knurled head for excellent grip and torque transmission.
- Reliable thread engagement due to Class 3A thread fit and coarse 1/2"-13 UNC threads, facilitating quick assembly and vibration resistance.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.
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 stress. The coarse UNC threads and Class 3A fit provide robust fastening in high-vibration environments, while the precisely machined shoulder ensures accurate component positioning in machinery, conveyor systems, and automotive assemblies. Its high tensile and shear strength makes it suitable for heavy-duty applications, reducing maintenance needs and downtime. The hex drive and knurled head enhance installation efficiency, making it a reliable choice for engineers seeking durability and performance in industrial shoulder screw applications.
Specification Summary & Compliance
This shoulder screw features a 1/2"-13 UNC thread with Class 3A fit for precise tolerance, a shoulder diameter of 5/8" with tight tolerances (-0.004" to -0.002"), and a thread length of 3/4". It complies with ASME B18.3 manufacturing standards and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations for industrial use.
