S-90269A919 M20 ISO 7379 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 chemical exposure.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for high-stress applications.
- Precise alignment and spacing ensured by the 55mm shoulder with tight length tolerance (0 to 0.25 mm).
- Secure, non-slip installation provided by the knurled head and 12 mm hex drive for reliable torque transfer.
- Accurate and durable thread engagement with Class 5g6g fit and coarse M20x2.5 thread for easy assembly.
- Enhanced wear resistance and aesthetics from the black oxide finish, reducing galling and reflection.
- Global compliance and reliability meeting ISO 7379 standards and RoHS 3/REACH regulations for safe use.
Professional Applications & Engineering Value
This M20 shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial machinery. The 316 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for marine, chemical processing, and food-grade applications. The 55mm precision shoulder acts as a pivot, bearing surface, or locator, ensuring components remain accurately spaced and reducing wear on threaded sections. Combined with a black oxide finish and hex drive socket head, it offers easy installation and long-term durability. Ideal for use in assembly jigs, rotating shafts, and conveyor systems, this screw minimizes maintenance and enhances operational reliability in demanding environments.
Specification Summary & Compliance
The screw features a Class 5g6g thread fit and M20x2.5 coarse thread for consistent performance. Shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring precise dimensional control. It complies with ISO 7379 manufacturing standards and is verified to be RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting international environmental and safety regulations.
