S-8077A611 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 and black oxide finish, ideal for harsh industrial environments.
- High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing applications.
- Precise thread engagement with Class 3A fit and UNC coarse threads, ensuring secure fastening and vibration resistance.
- Easy installation and removal thanks to the hex socket drive and knurled head for improved grip during assembly.
- Durable and wear-resistant with Rockwell B79 hardness, maintaining integrity under repetitive use.
- Accurate shoulder dimensions with tight tolerances for consistent alignment in machinery and assemblies.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for safe, regulated use.
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 in humid or chemical-exposed environments. The Class 3A thread fit and UNC coarse threads provide excellent vibration resistance, reducing the risk of loosening in dynamic applications like rotating machinery, automotive assemblies, and precision equipment. The knurled head and hex socket drive facilitate quick installation, while the precise shoulder diameter and length ensure accurate component alignment, minimizing wear and extending service life. Ideal for industrial screws in high-stress applications, it delivers reliable performance where durability and compliance with standards like ASME B18.3 are paramount.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC thread with Class 3A fit for high precision, along with a shoulder diameter of 3/8" and length of 1 7/8" within tight tolerances. Manufactured to ASME B18.3 specifications, it ensures dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for global industrial use.
