S-91054A497 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 surface durability from TiCN coating, reducing wear and extending service life in high-friction applications.
- Superior load-bearing capacity with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under stress.
- Precise alignment and pivot function due to the 1 1/2" shoulder with tight diameter tolerance, minimizing assembly play.
- Easy installation and removal with a 5/32" hex drive socket head, providing secure torque transmission.
- Wide compatibility with 1/4"-20 UNC coarse threads and Class 2A fit, ensuring consistent engagement in standard components.
- Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global industrial markets.
Professional Applications & Engineering Value
This TiCN-coated 18-8 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, such as misalignment and component wear. The 1 1/2" precise shoulder acts as a stable pivot or spacer, reducing vibration and ensuring accurate part positioning in assemblies like rotating shafts, linkages, and bearing supports. The coarse UNC thread and Class 2A fit facilitate quick installation while maintaining tight tolerances, which is essential in automated equipment and manufacturing jigs. With high tensile strength and corrosion-resistant properties, it delivers long-term reliability in demanding sectors including automotive, aerospace, and industrial automation, minimizing downtime and maintenance costs.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. Key specifications include a 1/4"-20 thread size, 3/8" thread length, and precise shoulder dimensions (5/16" diameter with -0.002" to 0" tolerance). It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial applications worldwide.
