S-91273A425 M8 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.
- Precise component alignment enabled by the standard shoulder fit and tight diameter tolerance, reducing assembly errors.
- High mechanical strength with 70,000 PSI tensile strength and Rockwell B55 hardness for reliable performance under load.
- Secure and efficient installation using the 4mm hex socket drive and knurled head for enhanced grip and torque application.
- Optimized for coarse threading applications with M8x1.25 Class 5g6g thread, ensuring quick assembly and vibration resistance.
- Dimensional consistency with controlled shoulder length and diameter tolerances for repeatable, high-quality assemblies.
- Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use.
Professional Applications & Engineering Value
This M8 shoulder screw is engineered to address critical alignment and strength requirements in industrial applications. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for machinery, automotive, and electronic assemblies exposed to demanding conditions. The precision shoulder with its tight diameter tolerance ensures accurate location of components, minimizing misalignment and wear. Combined with the coarse metric thread (M8x1.25) and Class 5g6g thread fit, it offers reliable fastening in high-vibration environments, reducing maintenance needs. The 4mm hex drive and knurled head facilitate easy installation and removal, enhancing productivity in automated or manual assembly lines.
Specification Summary & Compliance
This shoulder screw features a metric M8x1.25 coarse thread with Class 5g6g thread fit for standard tolerance. The shoulder diameter tolerance is -0.04 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring precise dimensional control. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.
