S-91264A802 5/8"-11 ASME B18.3, ASTM A574 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 load-bearing capacity with 140,000 psi tensile strength and 84,000 psi shear strength for demanding industrial applications
- Vibration-resistant locking through integrated nylon pellet thread locker, maintaining secure fastening from -50° to 250°F
- Precision thread engagement with Class 3A fit and UNC coarse threads ensuring reliable assembly and disassembly
- Enhanced corrosion resistance via black oxide finish protecting against rust in harsh operating environments
- Optimized shoulder design with 3/4" diameter and 2" length providing accurate component alignment and rotational control
- Secure installation with knurled socket head and 3/8" hex drive preventing tool slippage during high-torque applications
- Long-term durability from alloy steel construction with Rockwell C32 hardness for extended service life
Professional Applications & Engineering Value
This high-strength shoulder screw solves critical alignment and vibration challenges in precision machinery and heavy equipment. The alloy steel construction with black oxide finish provides exceptional corrosion resistance while maintaining 140,000 psi tensile strength under extreme loads. The 3/4" shoulder diameter and 2" shoulder length create precise bearing surfaces for rotating components in conveyor systems, automotive jigs, and industrial robots. The integrated nylon pellet thread locker prevents loosening from vibrations in manufacturing equipment, while the UNC coarse threads with Class 3A fit ensure quick assembly in production environments. The knurled socket head with hex drive allows for secure tool engagement during high-torque installation in confined spaces.
Specification Summary & Compliance
This shoulder screw features precision Class 3A thread fit with 5/8"-11 UNC coarse threads and maintains tight shoulder tolerances (-0.004" to -0.002" diameter, -0.005" to 0.005" length). Manufactured to ASME B18.3 specifications using ASTM A574 alloy steel with Rockwell C32 hardness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use worldwide.
