S-94035A191 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 and passivated finish for extended service life in harsh environments
- Precise component alignment enabled by the 5/16" shoulder diameter with tight ±0.001" tolerance for reliable assembly
- High mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Secure installation and removal with the hex socket drive design preventing cam-out and enabling high torque application
- Reliable thread engagement through Class 2A UNC coarse threads ensuring consistent fastening performance
- Environmental compliance meeting RoHS 3 and REACH regulations for safe use across global markets
- Optimized shoulder design providing stable bearing surface and precise location for rotating components
Professional Applications & Engineering Value
This precision shoulder screw solves critical alignment challenges in industrial machinery and equipment. The 18-8 stainless steel construction with passivated finish provides exceptional corrosion resistance, making it ideal for applications exposed to moisture, chemicals, or outdoor conditions. The precisely machined 5/16" shoulder diameter with tight tolerances ensures accurate component positioning in assemblies requiring rotational movement or precise spacing. The hex socket head design allows for high-torque installation in confined spaces, while the UNC coarse threads with Class 2A fit provide reliable engagement in various materials. These shoulder screws deliver engineering value in robotics, conveyor systems, and precision instruments where alignment accuracy and durability are paramount.
Specification Summary & Compliance
This shoulder screw features 1/4"-20 UNC threads with Class 2A thread fit and precise shoulder dimensions maintaining tight tolerances (±0.001" diameter, +0.002" length). Manufactured from 18-8 stainless steel with passivated finish, it delivers 70,000 psi tensile strength and Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.
