S-90337A155 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 and passivated finish, ideal for harsh industrial environments.
- Precise component alignment enabled by the precisely toleranced shoulder (-0.001" to 0" diameter, 0" to 0.002" length) for reliable assembly.
- High-strength performance offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
- Space-saving low-profile socket head with 5/64" hex drive for easy installation in confined spaces.
- Reliable thread engagement with UNC coarse threads and Class 2A fit, ensuring consistent fastening.
- Compliance with environmental regulations, being RoHS 3 and REACH compliant for global supply chain suitability.
- Durable right-hand thread design with 2-56 size for secure, long-lasting connections in mechanical assemblies.
Professional Applications & Engineering Value
This 2-56 UNC shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining exact part alignment and resisting environmental wear. The 18-8 Stainless Steel material, combined with a passivated finish, provides excellent corrosion resistance, making it suitable for applications in electronics, machinery, and automotive sectors where moisture or chemicals are present. The low-profile socket head and precise shoulder diameter (3/16") ensure minimal protrusion and accurate positioning, reducing the risk of misalignment in tight spaces. With a coarse thread and Class 2A fit, it offers quick installation and reliable performance, supporting efficient production lines and reducing downtime in industrial settings.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. Dimensions include a shoulder diameter tolerance of -0.001" to 0" and shoulder length tolerance of 0" to 0.002", ensuring precision in manufacturing. It is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and use in global markets.
