S-90807A124 5/16"-18 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 strength and durability with 140,000 psi tensile strength and Rockwell C32 hardness for reliable performance in demanding applications
- Precise Class 3A thread fit ensures superior assembly accuracy and vibration resistance in critical mechanical systems
- Enhanced corrosion protection through black oxide finish that extends service life in harsh industrial environments
- Secure knurled head design provides improved grip during installation while maintaining professional appearance
- Optimized shoulder dimensions with 5/8" length and precise diameter tolerance for accurate component alignment
- Industry-standard UNC coarse threads enable faster assembly and reduced cross-threading risks
- Comprehensive regulatory compliance with RoHS 3 and REACH standards for global manufacturing applications
Professional Applications & Engineering Value
This alloy steel shoulder screw delivers exceptional engineering value through its robust material composition and precision manufacturing. The black oxide finish provides superior corrosion resistance, making it ideal for machinery, automotive, and industrial equipment where environmental exposure is a concern. The Class 3A thread fit and precise shoulder dimensions ensure accurate component alignment in assemblies requiring strict tolerances, such as rotating mechanisms, bearing mounts, and precision instruments. The knurled socket head with hex drive allows for secure installation in confined spaces while preventing tool slippage. These shoulder screws effectively solve alignment and wear issues in applications where components must rotate or pivot freely on the shoulder while maintaining positional accuracy.
Specification Summary & Compliance
This precision shoulder screw features 5/16"-18 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy. The shoulder maintains tight tolerances with diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". Manufactured from high-strength alloy steel with black oxide finish, the component complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial applications.
