S-90337A355 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 industrial environments
- Precise component alignment through the exact 3/4" shoulder length with tight tolerances for reliable assembly
- High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Space-saving low-profile socket head with 5/64" hex drive for installations with limited clearance
- Consistent thread engagement with Class 2A UNC coarse threads ensuring reliable fastening in various materials
- Environmental compliance meeting RoHS 3 and REACH regulations for global industrial use
- Optimized drive efficiency with smooth socket head profile reducing tool slippage during installation
Professional Applications & Engineering Value
This precision shoulder screw addresses critical alignment challenges in machinery assembly, where component positioning directly impacts operational accuracy. The 18-8 stainless steel construction provides excellent corrosion resistance in manufacturing environments exposed to moisture or chemicals, while the 3/4" shoulder length with precise tolerances ensures consistent spacing between moving parts. The low-profile socket head design allows installation in confined spaces common in electronic enclosures and precision instruments, and the 2-56 UNC coarse thread with Class 2A fit provides reliable fastening in both metallic and composite materials. These features make it particularly valuable for industrial automation equipment, precision mechanisms, and assemblies requiring repeated disassembly without performance degradation.
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". Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility. The inch system measurement provides compatibility with North American machinery specifications, while the 70,000 psi tensile strength and Rockwell B55 hardness guarantee mechanical reliability in demanding applications.
