S-91054A496 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
- Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Enhanced durability and wear resistance from TiCN coating, extending service life in high-friction applications
- Precise component alignment ensured by the 5/16" shoulder diameter with tight tolerances for reliable assembly
- Superior load-bearing capacity with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty use
- Easy installation and removal using the 5/32" hex drive socket head, reducing assembly time
- Secure and consistent threading with Class 2A fit UNC coarse threads, minimizing cross-threading risks
- Compliance with global regulations including RoHS 3 and REACH, ensuring safe and sustainable usage
Professional Applications & Engineering Value
This precision shoulder screw is engineered to address critical alignment and wear challenges in industrial machinery, automation systems, and precision equipment. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, while the TiCN coating significantly reduces surface wear in high-cycle applications, prolonging component life. The 5/16" shoulder diameter with precise tolerances ensures accurate positioning of moving parts, preventing misalignment in assemblies like rotating shafts, linkages, and bearing supports. With 1/4"-20 UNC coarse threads and a Class 2A fit, it offers reliable fastening in vibrating environments, making it ideal for use in manufacturing, automotive, and aerospace sectors where durability and precision are paramount.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. Dimensions include a 5/16" shoulder diameter (-0.002" to 0" tolerance) and 1 1/4" shoulder length (0" to 0.003" tolerance), ensuring precise assembly. It is manufactured from 18-8 stainless steel with a hardness of Rockwell B55 and tensile strength of 70,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety standards for industrial applications.
