S-91273A863 1/2"-13 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 material, ideal for harsh or washdown environments.
- High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable, durable connections.
- Precise component alignment enabled by the consistent shoulder diameter and length with tight manufacturing tolerances.
- Easy installation and removal with a 1/4" hex drive and knurled socket head for superior grip and torque application.
- Wide compatibility with 1/2"-13 UNC coarse threads (Class 2A fit) for common industrial assemblies.
- Enhanced durability from Rockwell B55 hardness, resisting wear and deformation under load.
- Environmental and regulatory compliance with RoHS 3 and REACH, ensuring safety for global supply chains.
Professional Applications & Engineering Value
This 18-8 Stainless Steel shoulder screw is engineered to solve critical alignment and strength challenges in precision industrial applications. The 1/2"-13 UNC coarse thread and Class 2A fit ensure secure fastening with excellent vibration resistance, while the precisely machined shoulder provides a stable pivot point or spacer for rotating parts in machinery, conveyor systems, and automated equipment. The knurled socket head and 1/4" hex drive allow for high-torque installation in confined spaces, reducing assembly time and tool slippage. Its high tensile and shear strength, combined with corrosion-resistant stainless steel, makes it a reliable choice for demanding environments like food processing, packaging, and automotive assembly, where durability and precision are paramount.
Specification Summary & Compliance
This shoulder screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent engagement. Shoulder diameter and length are manufactured to tight tolerances (e.g., diameter: -0.004" to -0.002") ensuring precise alignment. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and suitable for international industrial use.
