S-90337A357 2-56 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 environments and extended service life.
- Precise component alignment ensured by a 1" shoulder length with minimal tolerance for reliable assembly and reduced wear.
- High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical applications.
- Secure and flush installation enabled by the low-profile socket head and 5/64" hex drive, saving space and preventing snagging.
- Reliable thread engagement with Class 2A UNC coarse threads, providing consistent fastening and ease of assembly in right-hand direction.
- Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries.
- Optimized shoulder fit with a controlled 3/32" diameter tolerance for smooth rotation and precise bearing surfaces.
Professional Applications & Engineering Value
This 2-56 UNC shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 Stainless Steel material offers excellent resistance to rust and corrosion, making it suitable for applications in electronics, machinery, and automotive sectors where environmental factors are a concern. The low profile socket head design allows for compact installations without protruding hardware, while the 1" exact shoulder length provides a consistent pivot or spacer, reducing misalignment and component wear. With a Class 2A thread fit and coarse UNC threads, it ensures quick, secure fastening in high-vibration settings, enhancing overall assembly reliability and maintenance efficiency.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for precise tolerance. Key dimensions include a shoulder diameter of 3/32" (tolerance: -0.001" to 0") and shoulder length of 1" (tolerance: 0" to 0.002"), ensuring accurate manufacturing. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible procurement and use in industrial applications.
