S-91327A273 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
- Vibration-resistant locking with nylon patch ensures secure fastening in high-stress environments, preventing loosening under dynamic loads.
- Exceptional corrosion resistance from 18-8 stainless steel and passivated finish extends service life in harsh or outdoor industrial settings.
- High tensile strength of 70,000 psi provides reliable load-bearing capacity for heavy-duty mechanical assemblies.
- Precision Class 3A thread fit guarantees smooth assembly and consistent clamping force in critical applications.
- Wide temperature tolerance (-50° to 250°F) allows stable performance in fluctuating thermal conditions without compromising integrity.
- Knurled hex socket head offers enhanced grip for easy installation and removal, reducing tool slippage during maintenance.
- Accurate shoulder dimensions with tight tolerances ensure proper alignment and spacing in rotating or sliding components.
Professional Applications & Engineering Value
Engineered for demanding industrial environments, this 5/8"-11 UNC shoulder screw combines 18-8 stainless steel construction with a passivated finish to resist corrosion and wear in machinery, automotive, and assembly line systems. The integrated nylon patch thread locker eliminates the need for separate adhesives, reducing assembly time while maintaining bolt preload under vibration. With a coarse UNC thread and Class 3A fit, it ensures quick installation and precise alignment in pivots, gears, and linkages, minimizing downtime. The 1 1/2" shoulder length provides stable bearing surfaces for rotating parts, making it ideal for jigs, conveyors, and robotic arms where dimensional accuracy is critical.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for superior engagement. Shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005" to ensure precision. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting eco-friendly manufacturing practices.
