S-90403A875 M6 x 25 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 vibration resistance with integrated internal-tooth lock washer that maintains secure fastening in high-motion environments
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in industrial conditions
- Optimized drive engagement with Phillips No. 3 drive design ensuring efficient installation and reduced cam-out risk
- Reliable thread performance featuring Class 6g thread fit and coarse 1mm pitch for quick assembly and consistent clamping force
- High mechanical strength delivering 60,000 PSI tensile strength and Rockwell B73 hardness for demanding applications
- Complete thread coverage with fully threaded 25mm length providing maximum grip and load distribution
- Standard-compliant design meeting ASME B18.13.1M specifications for guaranteed dimensional accuracy and interoperability
Professional Applications & Engineering Value
These M6 metric screws with zinc-plated steel construction address critical industrial fastening challenges where vibration loosening and environmental exposure compromise joint integrity. The internal-tooth lock washer actively resists rotational movement under dynamic loads, while the Class 6g thread fit ensures precise engagement with mating components. The rounded pan head with Phillips drive facilitates accessible installation in confined spaces, making them ideal for machinery assembly, electrical enclosures, and automotive components where reliable, vibration-resistant fastening is essential for operational safety and reduced maintenance intervals.
Specification Summary & Compliance
Manufactured to ASME B18.13.1M standards with Class 6g thread tolerance for metric coarse threading (M6 x 1mm pitch). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 25mm length provides complete threading with precise dimensional control for consistent performance across industrial applications.
