S-90403A872 M6 x 12 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 under dynamic loads
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in demanding environments
- High tensile strength of 60,000 psi ensures reliable performance in heavy-duty applications and structural assemblies
- Optimized drive engagement with Phillips No. 3 drive design for efficient installation and reduced cam-out risk
- Precision Class 6g thread fit provides consistent mating with nuts and threaded components for reliable assembly
- Full threading along 12 mm length enables maximum grip range and adjustment flexibility in various material thicknesses
- Rockwell B73 hardness rating delivers excellent wear resistance and durability through repeated installation cycles
Professional Applications & Engineering Value
These M6 metric screws with coarse 1 mm pitch threading are engineered to address critical industrial fastening challenges where vibration loosening and corrosion compromise assembly integrity. The zinc-plated steel construction combined with the internal-tooth lock washer creates a comprehensive solution for machinery, equipment manufacturing, and structural applications subject to dynamic stresses. The rounded pan head profile with Phillips drive facilitates efficient installation while providing a low-profile finish. Particularly valuable in automotive subassemblies, industrial machinery, and electrical enclosures, these screws maintain clamping force through the washer's positive locking action that bites into both the bearing surface and screw head, preventing rotational loosening under cyclic loading conditions.
Specification Summary & Compliance
Manufactured to precise Class 6g thread tolerance for consistent mating performance, these fully threaded M6 x 1 mm screws meet ASME B18.13.1M mechanical and dimensional specifications. The 12 mm length provides standardized engagement across metric applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and workplace safety, while the zinc-plated finish on both screw and washer delivers consistent corrosion protection throughout the assembly.
