S-97832A187 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
- Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength delivering 70,000 psi tensile strength and 35,000 psi shear strength for reliable load-bearing performance
- Precision thread engagement with Class 3A fit and UNC coarse threads ensuring secure fastening and vibration resistance
- Enhanced grip and tool engagement through knurled head texture and 5/64" hex socket drive for slip-resistant installation
- Accurate component alignment with controlled shoulder diameter and length tolerances for precise assembly positioning
- Long-term durability supported by Rockwell B55 hardness for sustained performance under mechanical stress
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing
Professional Applications & Engineering Value
Engineered for precision machinery and industrial assemblies, this 18-8 Stainless Steel shoulder screw addresses critical alignment and corrosion challenges in demanding applications. The 4-40 UNC coarse thread with Class 3A fit provides superior vibration resistance in automated equipment, while the precisely machined shoulder maintains component spacing in rotating assemblies and bearing mounts. The hex socket drive with knurled head ensures secure tool engagement during installation in confined spaces. With excellent corrosion resistance and 70,000 psi tensile strength, this fastener delivers reliable performance in manufacturing equipment, robotics, and precision instruments where dimensional stability and durability are paramount.
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". Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility while delivering consistent mechanical performance across industrial applications.
