S-8077A569 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 chemical exposure.
- Enhanced durability and wear resistance from the black oxide finish, providing a protective layer and reduced galling.
- High-strength performance with 70,000 psi tensile and 35,000 psi shear strength for demanding mechanical loads.
- Precise alignment and smooth rotation ensured by the precision-ground shoulder with controlled diameter and length tolerances.
- Secure, non-slip installation thanks to the knurled socket head and hex drive, allowing for high torque application.
- Reliable, coarse UNC threading with Class 3A fit for fast assembly and vibration resistance in industrial settings.
- Compliance with major standards including ASME B18.3, RoHS 3, and REACH, ensuring quality and environmental safety.
Professional Applications & Engineering Value
This 316 Stainless Steel Shoulder Screw is engineered to address critical challenges in machinery and assembly design. The black oxide finish not only enhances corrosion resistance but also minimizes friction, making it ideal for rotating parts and precision shoulder bolt applications in conveyor systems, pivots, and jigs. Its UNC coarse thread and Class 3A thread fit ensure quick, secure fastening in high-vibration environments, reducing maintenance downtime. The knurled head and hex drive provide a firm grip for efficient installation, while the robust shoulder diameter and length with tight tolerances guarantee accurate component alignment. Suitable for industries like automotive, aerospace, and food processing, this industrial fastener delivers long-term reliability and performance under stress.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with precise dimensions including a 5/16"-18 UNC thread in Class 3A fit for superior thread engagement. The shoulder features a diameter of 3/8" (tolerance: -0.004" to -0.002") and length of 2" (tolerance: -0.005" to 0.005"), ensuring consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental standards for global industrial use.
