S-91273A564 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 construction, ideal for harsh industrial environments.
- Enhanced durability and wear resistance from the black oxide finish, providing a protective layer against abrasion.
- High-strength performance offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable load-bearing applications.
- Precise alignment and reduced wear with a knurled head and standard shoulder fit, ensuring secure positioning in assemblies.
- Easy installation and removal using a standard 1/8" hex drive socket head, saving time during maintenance.
- Wide compatibility with 1/4"-20 UNC coarse threads and Class 2A fit, ensuring consistent performance in various machinery.
- Compliance with environmental standards including RoHS 3 and REACH, making it safe for global industrial use.
Professional Applications & Engineering Value
This shoulder screw is engineered to address common industrial challenges such as misalignment and component wear. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, while the black oxide finish adds an extra layer of protection against friction and environmental factors. The UNC coarse thread and Class 2A thread fit ensure quick assembly and reliable holding power in dynamic applications like machinery linkages, pivots, and rotating assemblies. With a knurled head for improved grip and a hex socket drive for easy access in tight spaces, it reduces installation time and enhances operational efficiency in automotive, aerospace, and manufacturing sectors.
Specification Summary & Compliance
This shoulder screw features precise dimensions including a 1/4"-20 UNC thread with Class 2A fit for standard tolerance, a shoulder diameter of 1/4" with tolerance from -0.004" to -0.002", and a shoulder length of 1/2" with tolerance from -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial use worldwide.
