S-91273A528 5-40 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
- Exceptional corrosion resistance from 18-8 stainless steel and black oxide finish, ideal for harsh industrial environments.
- High-strength performance with 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing applications.
- Precise alignment and spacing ensured by the 1/8" shoulder diameter with tight tolerance and standard shoulder fit.
- Secure, non-slip installation provided by the knurled socket head and 5/64" hex drive, reducing tool slippage.
- Durable, long-lasting construction with Rockwell B55 hardness, resisting wear and deformation.
- Broad compatibility with 5-40 UNC coarse threads and Class 2A fit for easy assembly and interchangeability.
- Regulatory compliance with RoHS 3 and REACH, meeting strict environmental and safety standards.
Professional Applications & Engineering Value
This 5-40 UNC shoulder screw is engineered to solve critical alignment and rotational issues in precision assemblies. The 18-8 stainless steel material, combined with a black oxide finish, provides superior resistance to corrosion and oxidation, making it ideal for machinery, automotive, and electronic applications exposed to moisture or chemicals. The 1/8" shoulder diameter with tight tolerance ensures exact component positioning, reducing wear and misalignment. The knurled socket head and hex drive allow for secure torque application, minimizing the risk of stripping during installation. Its high tensile and shear strength supports heavy-duty use, while the coarse UNC threads facilitate quick assembly in industrial settings, enhancing productivity and reliability.
Specification Summary & Compliance
This shoulder screw adheres to Class 2A thread fit and UNC standards for consistent performance. Dimensions include a shoulder diameter of 1/8" (tolerance: -0.004" to -0.002") and shoulder length of 1/2" (tolerance: -0.005" to 0.005"). It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.
