S-8077A542 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 and Black Oxide finish, ideal for harsh industrial environments
- Precise component alignment ensured by the 2 3/4" shoulder with tight tolerances for reliable assembly performance
- High-strength durability with 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications
- Secure, non-slip installation thanks to the knurled hex socket head and 3/8" drive for maximum torque transmission
- Accurate, reliable threading with Class 3A fit and UNC coarse thread for vibration resistance and easy assembly
- Broad compliance with ASME B18.3, RoHS 3, and REACH standards for quality assurance and environmental safety
- Versatile industrial use supported by right-hand thread direction and standard socket head profile for compatibility with common tools
Professional Applications & Engineering Value
This 5/8"-11 UNC shoulder screw in 316 Stainless Steel with Black Oxide finish addresses critical engineering needs in machinery, automation, and heavy equipment. The Class 3A thread fit and coarse UNC threading provide exceptional resistance to loosening under vibration, while the precisely machined shoulder ensures accurate alignment of rotating parts like bearings, pulleys, and gears. The knurled hex socket head enhances grip during installation, reducing tool slippage in high-torque scenarios. With a 2 3/4" shoulder length and high tensile strength, it supports robust performance in assembly lines, construction equipment, and marine applications where corrosion resistance and durability are paramount.
Specification Summary & Compliance
This shoulder screw maintains Class 3A thread fit per UNC standards, with shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005" for precision assembly. It conforms to ASME B18.3 manufacturing specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial supply chains.
