S-8077A612 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 and marine environments.
- Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance.
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity for demanding applications.
- Precise Class 3A thread fit guarantees secure, vibration-resistant assemblies with minimal play.
- Easy installation and removal with a knurled socket head and 3/16" hex drive, improving assembly efficiency.
- Accurate shoulder diameter and length tolerances enable consistent alignment and spacing in machinery.
- Compliance with ASME B18.3, RoHS 3, and REACH ensures quality, safety, and environmental standards are met.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with a black oxide finish is engineered to address common industrial challenges like corrosion, misalignment, and mechanical stress. The UNC coarse threading and Class 3A thread fit provide robust, vibration-resistant fastening in high-load scenarios, such as precision machinery, automotive assemblies, and conveyor systems. The knurled socket head allows for quick, secure tool engagement, reducing installation time and improving workflow efficiency. With a shoulder diameter of 3/8" and tight tolerances, it ensures precise component alignment, minimizing wear and extending equipment life in demanding industrial applications.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC thread with Class 3A fit for high precision, and dimensions include a shoulder diameter of 3/8" (tolerance: -0.004" to -0.002") and shoulder length of 2 1/8" (tolerance: -0.005" to 0.005"). It meets ASME B18.3 specifications for dimensional consistency and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.
