S-90402A196 8-32 x 5/8" 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-stress applications
- Enhanced corrosion protection through zinc-plated steel construction ensures long-term durability in harsh environments
- Superior holding power with 60,000 psi tensile strength and Rockwell B69 hardness for reliable fastening performance
- Easy installation with Phillips No. 2 drive and standard pan head design for quick assembly operations
- Wide compatibility through UNC coarse thread pattern and Class 2A fit for consistent engagement with standard components
- Full-thread coverage along the 5/8" length provides maximum grip strength throughout the entire fastener
- Regulatory compliance meets industry standards including ASME B18.13, RoHS 3, and REACH for quality assurance
Professional Applications & Engineering Value
These zinc-plated steel screws with external-tooth lock washers provide critical vibration resistance in demanding industrial settings. The combination of Rockwell B69 hardness and 60,000 psi tensile strength ensures reliable performance in machinery assembly, electrical enclosures, and structural frameworks where constant movement or thermal cycling occurs. The UNC coarse thread pattern with Class 2A fit guarantees consistent engagement in tapped holes, while the fully threaded design maximizes clamping force across the entire 5/8" length. The Phillips drive and pan head configuration facilitate efficient installation in confined spaces, making these rounded head screws ideal for maintenance operations and production line applications requiring secure, long-lasting fastening solutions.
Specification Summary & Compliance
This fastener features precision UNC coarse threads with Class 2A dimensional tolerance, ensuring consistent fit and performance. Manufactured according to ASME B18.13 specifications, the screw delivers reliable mechanical properties including 60,000 psi tensile strength and Rockwell B69 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use across various industrial sectors without restriction concerns.
