S-90317A712 M5 x 20 mm ASME B18.13.1M Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer
Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced Corrosion Resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments.
- Superior Vibration Resistance due to the integrated external-tooth lock washer made from 410 stainless steel, preventing loosening under dynamic loads.
- High Tensile Strength of 70,000 psi and Rockwell B70 hardness for reliable performance in demanding applications.
- Precise Metric Threading with M5 coarse thread and Class 6g fit, ensuring easy installation and secure fastening.
- Convenient Phillips Drive (No. 2 size) and pan head design for straightforward assembly with standard tools.
- Full Thread Engagement along the 20mm length, providing maximum grip and load distribution.
- Compliance with Industry Standards including ASME B18.13.1M, RoHS 3, and REACH, guaranteeing safety and regulatory adherence.
Professional Applications & Engineering Value
This M5 pan head screw with an external-tooth lock washer is engineered to address critical challenges in industrial assembly, such as vibration-induced loosening and corrosion. The 18-8 stainless steel construction, combined with a passivated finish, offers exceptional resistance to rust and chemicals, making it suitable for automotive, machinery, and outdoor equipment. The coarse thread (0.8mm pitch) and Class 6g fit ensure quick, reliable fastening in metal and plastic components, reducing installation time and maintenance costs. By integrating a lock washer, it maintains clamp force under dynamic stresses, enhancing the longevity of metric screw applications in high-vibration environments like engines and conveyor systems.
Specification Summary & Compliance
The screw features a metric thread size M5 x 0.8mm with a Class 6g tolerance for precise fit, fully threaded along a 20mm length. It meets ASME B18.13.1M specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity in industrial use.
