S-90402A827 10-32 x 3/8" ASME B18.13 Steel Pan Head Phillips Screws with External-Tooth Lock Washer
Steel Pan Head Phillips Screws with External-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 external-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
- Precision thread engagement with Class 2A UNF fine threads ensuring reliable fastening and consistent torque values
- Quick installation using standard No. 2 Phillips drive that reduces assembly time and tool slippage
- Full-thread design provides maximum thread contact along the entire 3/8" length for superior holding power
- Regulatory compliance meets ASME B18.13 specifications and environmental standards for global industrial use
Professional Applications & Engineering Value
These zinc-plated steel screws with external-tooth lock washers address critical vibration-induced loosening in machinery, automotive assemblies, and electrical enclosures. The UNF fine thread configuration combined with Class 2A thread fit ensures precise engagement in tapped holes, preventing cross-threading while maintaining consistent clamp load. The Phillips pan head design offers low-profile installation with excellent drive torque transfer, while the integrated locking washer eliminates the need for separate anti-vibration components. Engineered for industrial applications requiring reliable fastening under continuous stress, these screws provide lasting performance where vibration resistance and corrosion protection are paramount.
Specification Summary & Compliance
Manufactured to exacting ASME B18.13 standards with Class 2A thread fit tolerance for precision assembly. Features UNF 10-32 fine threads with right-hand orientation and full threading along the 3/8" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. The external-tooth lock washer provides positive locking action while maintaining 60,000 psi tensile strength and Rockwell B69 hardness specifications.
