S-90403A877 M8 x 16 mm ASME B18.13.1M Steel Pan Head Phillips Screws with Internal-Tooth Lock Washer
Steel Pan Head Phillips Screws with Internal-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 zinc-plated steel finish, extending service life in harsh industrial environments
- Enhanced vibration resistance through integrated internal-tooth lock washer that prevents loosening under dynamic loads
- High-strength performance with 60,000 psi tensile strength and Rockwell B73 hardness for demanding applications
- Optimized drive engagement with Phillips No. 4 drive for efficient installation and reduced cam-out risk
- Reliable thread engagement with Class 6g metric coarse threads ensuring secure fastening in various materials
- Maximum holding power through fully threaded design that provides consistent clamping force along entire length
- Industry compliance assurance meeting ASME B18.13.1M standards for dimensional accuracy and performance reliability
Professional Applications & Engineering Value
These M8 metric screws with zinc-plated steel construction and internal-tooth lock washer address critical vibration-induced loosening in industrial equipment, machinery, and automotive assemblies. The coarse thread pitch of 1.25mm combined with Class 6g thread fit ensures rapid installation and reliable performance in soft materials and high-vibration environments. The pan head design with Phillips drive provides a low-profile fastening solution that withstands rotational forces while the integrated locking mechanism maintains clamp load integrity. Engineered for heavy-duty applications where vibration resistance and corrosion protection are essential, these screws deliver consistent performance in manufacturing, assembly lines, and maintenance operations requiring dependable metric fasteners.
Specification Summary & Compliance
This M8 x 1.25mm x 16mm screw features Class 6g thread tolerance with coarse thread spacing and fully threaded design. Manufacturing complies with ASME B18.13.1M dimensional standards, ensuring precise metric thread specifications. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, providing assurance for industrial applications requiring certified components.
