S-90402A192 8-32 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
- Vibration-resistant locking with integrated external-tooth lock washer prevents loosening in high-motion industrial environments
- Superior corrosion protection through zinc-plated steel construction extends service life in demanding conditions
- High tensile strength rating of 60,000 psi ensures reliable performance under heavy loads and stress
- Precision Class 2A thread fit provides consistent engagement and reduces cross-threading during installation
- Optimized Phillips No. 2 drive delivers efficient torque transfer while minimizing cam-out during fastening
- Fully threaded design maximizes grip length and holding power across the entire fastener length
- Industry compliance assurance meets ASME B18.13 specifications and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 8-32 UNC zinc-plated steel screws address critical vibration-induced loosening challenges through their integrated external-tooth lock washer system. The coarse thread configuration combined with Class 2A thread fit ensures rapid installation and reliable performance in assembly lines where speed and consistency are paramount. The rounded pan head profile with Phillips No. 2 drive provides optimal driver engagement while maintaining a low-profile appearance. These fully threaded fasteners deliver exceptional vibration resistance in machinery, electrical enclosures, and automotive applications where maintaining clamp load under dynamic conditions is essential for operational safety and reduced maintenance intervals.
Specification Summary & Compliance
This 3/8" length screw features precision UNC coarse threads with Class 2A thread fit tolerance for consistent mating with standard nuts and threaded components. Manufacturing complies with ASME B18.13 specifications, ensuring dimensional accuracy and performance reliability. The fastener system meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) environmental standards, making it suitable for global industrial applications requiring certified components.
