S-90317A526 M3 x 8 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
- Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments.
- Reliable vibration-proof fastening thanks to the integrated 410 stainless steel external-tooth lock washer, preventing loosening under dynamic loads.
- High mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for durable, long-lasting assemblies.
- Effortless installation and removal with a standard Phillips No. 1 drive and fully threaded M3 coarse thread design.
- Precise thread fit and interchangeability ensured by Class 6g thread tolerance, compatible with standard metric nuts and tapped holes.
- Secure and stable seating provided by the rounded pan head design, distributing clamp load effectively.
- Compliance with major industrial standards including ASME B18.13.1M, ensuring quality and reliability in professional applications.
Professional Applications & Engineering Value
This M3 rounded head screw with an external-tooth lock washer is engineered to solve critical challenges in industrial assembly, such as vibration-induced loosening and corrosion. The 18-8 stainless steel material, enhanced by a passivated finish, provides excellent resistance to rust and chemical exposure, making it suitable for outdoor equipment, marine applications, and food processing machinery. The coarse thread (0.5mm pitch) and fully threaded design enable quick installation and strong holding power in various substrates. The integrated lock washer in 410 stainless steel bites into surfaces, maintaining clamp force under stress and thermal cycling. This combination ensures reliable performance in industrial fasteners for automotive, electronics, and machinery where safety and longevity are paramount.
Specification Summary & Compliance
This screw features a Class 6g thread fit per ISO/metric standards, with dimensions of M3 x 0.5mm pitch and 8mm length. It is manufactured in compliance with ASME B18.13.1M for dimensional consistency and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for global industrial use.
