S-91273A259 5/8"-11 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 18-8 stainless steel construction, ideal for harsh industrial environments
- Enhanced grip and torque application through the knurled socket head with 5/16" hex drive
- Precise component alignment ensured by the 2 3/4" shoulder length with tight diameter tolerance
- Reliable thread engagement with Class 2A UNC coarse threads for quick assembly and vibration resistance
- High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding applications
- Consistent performance backed by Rockwell B55 hardness for durability under load
- Compliance with global standards including RoHS 3 and REACH for safe use in regulated industries
Professional Applications & Engineering Value
This 5/8"-11 UNC shoulder screw is engineered to solve critical alignment and stability challenges in industrial machinery. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for environments exposed to moisture or chemicals. The knurled socket head design ensures secure tool engagement, reducing slippage during installation in high-torque scenarios. With a 2 3/4" shoulder length and precise diameter tolerances, it maintains accurate positioning of components like gears, pulleys, and bearings, minimizing wear and misalignment. The coarse UNC threads and Class 2A fit enable rapid assembly while resisting loosening from vibrations, ideal for automotive, manufacturing, and assembly line applications where reliability is paramount.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. Key specifications include a 5/8"-11 thread size, 3/4" thread length, and shoulder diameter tolerance of -0.004" to -0.002". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.
