S-8077A335 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 environments and outdoor applications
- Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance under heavy loads
- High tensile strength of 70,000 psi and shear strength of 35,000 psi for reliable load-bearing in demanding mechanical assemblies
- Precision Class 3A thread fit ensures smooth engagement and secure fastening with minimal risk of stripping
- Knurled socket head design offers improved grip and easy installation with standard hex tools, reducing assembly time
- Accurate 1-1/2" shoulder length with tight tolerances for precise component alignment and rotational movement
- Full compliance with ASME B18.3 standards, RoHS 3, and REACH regulations for guaranteed quality and environmental safety
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with black oxide finish is engineered to address critical challenges in industrial machinery, automation systems, and precision equipment. The UNC coarse thread and Class 3A fit provide reliable fastening in high-vibration environments, while the knurled socket head ensures tool grip integrity during repeated adjustments. The 1-1/2" shoulder length with minimal tolerance variation enables exact positioning of gears, bearings, and linkages, reducing wear and maintenance downtime. Ideal for rotational assemblies and corrosive applications, it combines 70,000 psi tensile strength with chemical resistance, making it a trusted solution for OEM and MRO requirements in manufacturing, marine, and chemical processing sectors.
Specification Summary & Compliance
This shoulder screw maintains precise dimensional accuracy with Class 3A thread fit and shoulder diameter tolerance of -0.004" to -0.002". Manufactured to ASME B18.3 specifications, it features 5/16"-18 UNC coarse threads and standard shoulder fit. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.
