S-8077A529 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 and black oxide finish, ideal for harsh industrial environments.
- Precise alignment and reduced wear thanks to the 8" shoulder with tight length tolerance (±0.005") and standard shoulder fit.
- High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
- Reliable thread engagement ensured by Class 3A thread fit and coarse UNC threads for secure fastening.
- Easy installation and grip with a knurled socket head and 3/8" hex drive, reducing slippage during assembly.
- Enhanced durability from Rockwell B79 hardness, providing long-lasting service under mechanical stress.
- Compliance with industry standards including ASME B18.3, RoHS, and REACH for quality and environmental safety.
Professional Applications & Engineering Value
This 5/8"-11 UNC shoulder screw in 316 stainless steel with a black oxide finish is engineered to address critical alignment and durability challenges in industrial settings. The extended 8" shoulder length with minimal tolerance variations ensures precise component positioning, reducing misalignment and wear in machinery, automation systems, and heavy equipment. The coarse UNC thread and Class 3A fit provide secure fastening in high-vibration environments, while the knurled socket head allows for easy torque application. Ideal for applications requiring robust shear strength and corrosion resistance, this fastener supports reliable performance in manufacturing, aerospace, and marine industries, minimizing downtime and maintenance costs.
Specification Summary & Compliance
This shoulder screw adheres to Class 3A thread fit and UNC thread standards with precise dimensions: thread size 5/8"-11, shoulder diameter 3/4" (tolerance -0.004" to -0.002"), and shoulder length 8" (tolerance ±0.005"). Manufactured to ASME B18.3 specifications, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental and safety standards.
