S-90318A690 8-32 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 316 stainless steel construction, ideal for harsh environments and extended service life
- Exceptional strength and durability with 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under high stress
- Precise alignment and spacing ensured by the precisely machined shoulder with controlled diameter and length tolerances
- Space-saving installation with the ultra-low socket head design, allowing use in compact assemblies
- Secure and efficient fastening with the Class 2A UNC coarse thread and hex socket drive for easy installation and vibration resistance
- Consistent mechanical properties provided by Rockwell B70 hardness, ensuring uniform performance and reduced wear
- Compliance with environmental standards including RoHS 3 and REACH, making it suitable for regulated industrial applications
Professional Applications & Engineering Value
This 8-32 UNC shoulder screw is engineered from 316 stainless steel to deliver outstanding corrosion resistance in demanding conditions such as marine, chemical processing, and outdoor equipment. The ultra-low socket head and hex drive design facilitate easy installation in tight spaces, while the precise shoulder fit with minimal tolerances ensures accurate component alignment, reducing assembly errors and improving machinery reliability. With a coarse thread and Class 2A fit, it offers quick assembly and strong holding power, making it ideal for applications in precision instruments, automotive systems, and industrial machinery where vibration resistance and long-term durability are critical.
Specification Summary & Compliance
This shoulder screw features a Class 2A thread fit with UNC coarse threading for consistent engagement, and precise shoulder dimensions (diameter: 3/16" with -0.001" to 0" tolerance; length: 5/16" with 0" to 0.002" tolerance) to ensure accurate positioning. Manufactured to high standards, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and suitability for global industrial use.
