S-90807A148 1/2"-13 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 for reliable performance in high-stress applications
- Superior corrosion resistance through black oxide finish, extending service life in demanding industrial environments
- Precision thread engagement with Class 3A fit ensuring secure fastening and vibration resistance
- Enhanced grip and torque application from knurled socket head with 1/4" hex drive for easy installation
- Optimized shoulder design providing accurate component alignment and rotational stability
- Long-term durability maintained through Rockwell C32 hardness for repeated use in mechanical assemblies
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications
Professional Applications & Engineering Value
This alloy steel shoulder screw delivers critical engineering solutions where precision alignment and high strength are paramount. The 1/2"-13 UNC coarse thread with Class 3A fit provides superior thread engagement, preventing loosening in vibrating equipment while the black oxide finish offers essential corrosion protection in harsh environments. The precisely machined shoulder maintains component positioning in rotating assemblies, jigs, and machinery, while the knurled socket head with 1/4" hex drive ensures secure tool engagement during installation. Engineered for demanding applications including automation equipment, precision machinery, and heavy-duty industrial assemblies, this shoulder screw combines dimensional accuracy with exceptional mechanical properties for reliable long-term performance.
Specification Summary & Compliance
This shoulder screw features 1/2"-13 UNC coarse threads with Class 3A thread fit for precision engagement, manufactured from alloy steel with Rockwell C32 hardness. The shoulder diameter maintains tight tolerance of -0.004" to -0.002" with shoulder length tolerance of -0.005" to 0.005". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting international standards for industrial fastener applications.
