S-92012A513 4-40 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-to-weight ratio with 140,000 psi tensile strength for reliable performance in high-stress applications
- Precision shoulder alignment with controlled diameter and length tolerances ensures accurate component positioning
- Superior corrosion resistance through black oxide finish extends service life in demanding environments
- Optimized torque transmission via hex socket drive design prevents stripping and enables secure fastening
- Consistent thread engagement with Class 2A UNC coarse threads facilitates quick assembly and disassembly
- Enhanced durability from Rockwell C32 hardness maintains dimensional stability under repeated loads
- Regulatory compliance assurance with RoHS 3 and REACH standards meets international environmental requirements
Professional Applications & Engineering Value
This 4-40 UNC shoulder screw delivers critical engineering solutions where precise component alignment and rotational control are paramount. The alloy steel construction with black oxide finish provides exceptional corrosion resistance while maintaining the 140,000 psi tensile strength necessary for high-stress applications. The precisely machined 1/8" shoulder diameter with controlled tolerances ensures accurate bearing surfaces in machinery, automation systems, and precision instruments. The hex socket head design allows for high-torque installation in confined spaces, while the Class 2A thread fit with coarse UNC threads ensures reliable engagement in vibration-prone environments. These shoulder screws are engineered to maintain alignment in rotating assemblies, pivot points, and mechanical linkages where dimensional stability is critical to operational efficiency.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit per UNC specifications, featuring a shoulder diameter of 1/8" (-0.001" to 0" tolerance) and shoulder length of 3/16" (0" to 0.002" tolerance). The alloy steel construction achieves Rockwell C32 hardness and 140,000 psi tensile strength. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications.
