S-97345A871 5/8"-11 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 extended service life
- High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications
- Precise alignment and reduced wear thanks to the 3" shoulder length with tight tolerances for stable component positioning
- Reliable fastening performance ensured by Class 3A thread fit and UNC coarse threads for vibration resistance and easy assembly
- Enhanced installation grip with a knurled socket head and 3/8" hex drive, preventing tool slippage during torque application
- Consistent mechanical properties with Rockwell B79 hardness, providing dependable durability under repetitive stress
- Broad regulatory compliance meeting ASME B18.3 standards and RoHS/REACH directives for safe, global industrial use
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The Class 3A thread fit and UNC coarse threads deliver secure fastening in high-vibration settings, minimizing loosening risks. Its 3-inch shoulder length with controlled tolerances acts as a precise axle or pivot, reducing bushing wear and maintaining alignment in rotating assemblies. The knurled socket head enhances torque transmission, crucial for maintenance in confined spaces. Ideal for industrial applications like conveyor systems, robotics, and manufacturing jigs, it combines corrosion resistance with high tensile strength to endure aggressive environments while meeting strict industry specifications.
Specification Summary & Compliance
This shoulder screw maintains precise dimensional accuracy with a Class 3A thread fit per UNC standards, ensuring tight tolerances for reliable engagement. The shoulder diameter (3/4") and length (3") adhere to specified tolerances for consistent performance. Manufactured in compliance with ASME B18.3, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, confirming its suitability for regulated industrial and international markets.
