S-91259A461 10-24 ASME B18.3, ASTM A108 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
- Exceptional durability with 140,000 psi tensile strength and Rockwell C32 hardness for reliable performance in demanding industrial environments
- Superior corrosion resistance thanks to the black oxide finish that extends service life in harsh conditions
- Precise alignment and smooth rotation enabled by the standard shoulder fit with controlled diameter tolerance
- Secure installation and removal with the knurled socket head and 1/8" hex drive preventing tool slippage
- Optimized thread engagement through Class 3A thread fit and 10-24 UNC coarse thread for faster assembly
- Broad regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for global market acceptance
- Enhanced grip and handling from the knurled head texture, ideal for manual adjustments in tight spaces
Professional Applications & Engineering Value
This alloy steel shoulder screw delivers critical engineering solutions where precise alignment and rotational movement are paramount. The black oxide finish provides essential corrosion protection in manufacturing environments exposed to moisture and chemicals, while the 10-24 UNC coarse thread ensures rapid installation in production lines. The standard shoulder diameter maintains consistent spacing in assemblies, preventing component misalignment in machinery, pivoting mechanisms, and precision equipment. With its 140,000 psi tensile strength, this fastener withstands high-stress applications in automotive jigs, conveyor systems, and industrial robotics where failure is not an option. The knurled socket head combines secure drive engagement with improved manual handling for maintenance operations.
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". Manufactured to ASME B18.3 specifications using ASTM A108 material, it fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial applications.
