S-90403A146 6-32 x 3/8" ASME B18.13 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 construction for extended service life in demanding environments
- Exceptional vibration resistance through integrated internal-tooth lock washer that maintains secure fastening under dynamic loads
- High tensile strength performance rated at 60,000 psi ensures reliable holding power for critical applications
- Optimized drive engagement with Phillips No. 2 drive for efficient installation and reduced cam-out risk
- Precise thread compatibility with UNC coarse threads and Class 2A fit for consistent engagement and easy assembly
- Complete thread coverage along the 3/8" length provides maximum grip strength throughout the fastened joint
- Industry compliance assurance meeting ASME B18.13 standards with RoHS 3 and REACH environmental regulations
Professional Applications & Engineering Value
These zinc-plated steel screws with internal-tooth lock washers deliver critical vibration resistance in industrial machinery, electrical enclosures, and automotive assemblies where loosening under dynamic loads poses significant reliability concerns. The Phillips pan head design combines efficient installation with a low-profile appearance, while the UNC coarse threads and Class 2A fit ensure consistent engagement in various materials. With 60,000 psi tensile strength and Rockwell B69 hardness, these fully threaded fasteners maintain integrity under stress, making them ideal for production lines requiring both performance and regulatory compliance with ASME B18.13 standards and environmental directives.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threads (6-32 size) and right-hand threading. The fastener system includes an integrated internal-tooth lock washer (0.288" OD) for secure fastening. Full compliance with ASME B18.13 manufacturing specifications, RoHS 3 (2015/863/EU) environmental standards, and REACH (EC 1907/2006) regulations ensures suitability for global industrial applications.
