S-91273A252 5/8"-11 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, ideal for harsh environments and long-term reliability.
- Enhanced grip and torque application from the knurled head and 5/16" hex socket drive, reducing slippage during installation.
- High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring secure fastening in demanding applications.
- Precise alignment and spacing due to the standard shoulder fit and controlled diameter/length tolerances, minimizing assembly errors.
- Durable thread engagement with Class 2A fit and coarse 5/8"-11 UNC threads, providing reliable performance under vibration and stress.
- Consistent hardness and wear resistance from Rockwell B55 rating, maintaining structural integrity over repeated use.
- Compliance with environmental and safety standards including RoHS 3 and REACH, ensuring safe use in regulated industries.
Professional Applications & Engineering Value
This 18-8 Stainless Steel shoulder screw is engineered to address critical industrial challenges, such as misalignment and component wear in machinery. The 5/8"-11 UNC coarse thread and standard shoulder fit enable precise positioning in assemblies like rotating shafts, pivots, and guides, reducing downtime from adjustments. Its hex socket drive and knurled head facilitate secure tool engagement in confined spaces, while the high tensile and shear strengths support heavy-duty applications in automotive, aerospace, and manufacturing equipment. The corrosion-resistant material ensures longevity in moist or chemical-exposed settings, making it a reliable choice for precision industrial fasteners that demand durability and compliance.
Specification Summary & Compliance
The screw adheres to Class 2A thread fit and UNC standards for consistent threading, with shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005" to ensure dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free of hazardous substances for safe industrial use.
