S-90337A395 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
- Enhanced wear and galling resistance from TiCN coating, extending service life in high-friction applications
- Precise component alignment with accurately machined 1/8" shoulder diameter and tight tolerances
- High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Space-saving low profile design with socket head for confined spaces while maintaining 5/64" hex drive functionality
- Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fastening performance
- Environmental compliance meeting RoHS 3 and REACH standards for global manufacturing requirements
Professional Applications & Engineering Value
This precision 4-40 UNC shoulder screw delivers exceptional engineering value in applications requiring both secure fastening and precise component alignment. The 18-8 stainless steel base material provides excellent corrosion resistance, while the TiCN coating significantly reduces wear and galling in high-cycle applications. The low profile socket head design allows for installation in tight spaces without compromising drive integrity. The precisely machined shoulder with tight diameter and length tolerances ensures accurate positioning of components in assemblies, making it ideal for precision machinery, automation equipment, and electronic enclosures where reliable alignment and durable fastening are critical to performance and longevity.
Specification Summary & Compliance
This shoulder screw features Class 2A thread fit with 4-40 UNC coarse threads and right-hand thread direction. The shoulder maintains precise dimensions with diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002". Manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental responsibility and global regulatory acceptance for industrial applications.
