S-90337A463 1/4"-20 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 and passivated finish for long-lasting performance in harsh environments
- Precise component alignment through exact shoulder diameter and length tolerances, ensuring reliable assembly fit
- High strength-to-weight ratio delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Easy installation in confined spaces with low-profile socket head design and 5/32" hex drive
- Reliable thread engagement with Class 2A UNC coarse threads providing secure fastening and vibration resistance
- Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use
- Optimized for automated assembly with consistent right-hand threading and smooth head texture
Professional Applications & Engineering Value
This precision shoulder screw solves critical alignment challenges in industrial machinery, automation systems, and precision instruments. The 18-8 stainless steel construction with passivated finish provides exceptional corrosion resistance where lubricants or coolants are present. The 7/16" shoulder length with precise diameter tolerances ensures accurate component positioning in rotating assemblies and bearing applications. The low-profile socket head design allows for compact installations while maintaining 70,000 psi tensile strength for high-stress applications. UNC coarse threads with Class 2A fit enable quick assembly and disassembly while resisting vibration loosening in production environments.
Specification Summary & Compliance
This shoulder screw maintains Class 2A thread fit per UNC standards with shoulder diameter tolerance of -0.001" to 0" and shoulder length tolerance of 0" to 0.002". Manufactured from 18-8 stainless steel with passivated finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements. The fastener features 1/4"-20 UNC coarse threads, 7/16" shoulder length, and 5/16" shoulder diameter with precise manufacturing controls for consistent performance in industrial applications.
