S-91264A632 3/8"-16 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
- Exceptional load-bearing capacity with 140,000 psi tensile strength and 84,000 psi shear resistance for reliable performance in demanding applications
- Secure vibration-resistant locking thanks to the integrated nylon pellet thread locker that maintains integrity from -50° to 250°F
- Precision alignment and smooth rotation enabled by the 2" shoulder with tight diameter tolerance for accurate component positioning
- Superior corrosion protection through black oxide finish that extends service life in harsh industrial environments
- Easy installation and high torque capability with socket head design and 1/4" hex drive for efficient assembly
- Enhanced grip during manual adjustment provided by the knurled head texture for better handling
- Reliable thread engagement ensured by Class 3A fit UNC coarse threads for consistent fastening performance
Professional Applications & Engineering Value
This alloy steel shoulder screw delivers critical engineering solutions across industrial applications where precision alignment and vibration resistance are paramount. The 2" shoulder length with controlled diameter tolerance provides exact component spacing in machinery, automation systems, and rotating assemblies, eliminating the need for additional spacers. The nylon pellet thread locker maintains secure fastening despite thermal fluctuations from -50° to 250°F, preventing loosening in vibrating equipment. With black oxide finish enhancing corrosion resistance and the socket head design allowing high-torque installation in confined spaces, this 3/8"-16 UNC shoulder screw solves common challenges in manufacturing, automotive, and heavy equipment applications where reliability and precision are non-negotiable.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit and UNC coarse thread profile for consistent engagement. Shoulder diameter maintains -0.004" to -0.002" tolerance with shoulder length held to -0.005" to 0.005" tolerance. Fully compliant with ASME B18.3 specifications and manufactured to ASTM A574 standards. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements for industrial use.
