S-91327A259 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 construction, ideal for harsh industrial environments
- Reliable vibration resistance through permanent nylon patch thread locking, maintaining integrity from -50° to 250°F
- High load-bearing capacity with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Precise component alignment enabled by 2" shoulder length with tight diameter and length tolerances
- Secure installation and removal with hex socket drive and knurled head for superior tool grip
- Interchangeable compatibility with Class 3A UNC coarse threads meeting industry standards
- Environmental compliance assurance with RoHS 3 and REACH regulations for global manufacturing
Professional Applications & Engineering Value
This high-strength shoulder screw addresses critical assembly challenges in precision machinery, automation systems, and rotating equipment. The 18-8 Stainless Steel material provides excellent corrosion resistance while the 2" precision shoulder with tight tolerances (±0.005") ensures accurate component positioning and rotational stability. The permanent nylon patch thread locking technology prevents loosening under vibration, maintaining joint integrity across a wide temperature range (-50° to 250°F). The hex socket drive combined with the knurled head texture allows for secure installation in confined spaces, while the Class 3A UNC coarse threads deliver reliable engagement in various industrial applications requiring repeated disassembly and reassembly.
Specification Summary & Compliance
This shoulder screw features Class 3A thread fit with 1/2"-13 UNC coarse threads and precise shoulder dimensions (diameter tolerance: -0.004" to -0.002", length tolerance: -0.005" to 0.005"). Manufactured to industry standards with permanent nylon patch thread locking and compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe use in global industrial applications.
