S-90403A246 10-24 x 5/8" 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 vibration resistance with integrated internal-tooth lock washer that maintains clamping force under dynamic loads
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in industrial environments
- High-strength performance with 60,000 psi tensile strength and Rockwell B69 hardness for demanding applications
- Reliable thread engagement with UNC coarse threads and Class 2A fit ensuring consistent fastening performance
- Quick installation using standard No. 2 Phillips drive that prevents cam-out and reduces assembly time
- Full-thread design provides maximum thread contact and holding power along the entire 5/8" length
- Secure locking action from the internal-tooth washer that bites into mating surfaces to prevent loosening
Professional Applications & Engineering Value
These zinc-plated steel screws with internal-tooth lock washers solve critical vibration-induced loosening problems in industrial equipment, machinery, and automotive assemblies. The combination of UNC coarse threads and Class 2A fit ensures reliable engagement in various materials while the fully threaded design maximizes load distribution. The Phillips pan head with integrated locking washer creates a complete fastening system that maintains joint integrity under continuous stress, making these rounded head screws ideal for applications where vibration resistance and long-term reliability are paramount. The zinc plating provides essential corrosion protection for extended service life in demanding environments.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse threading (10-24 size). These screws feature a 5/8" fully threaded length with 0.19" thread diameter and meet ASME B18.13 specifications for quality assurance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures they meet current industry standards for hazardous substance restrictions.
