S-90403A194 8-32 x 1/2" 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 secure fastening under dynamic loads
- Exceptional durability provided by zinc-plated steel construction offering reliable corrosion protection in industrial environments
- High-strength performance with 60,000 psi tensile strength and Rockwell B69 hardness for demanding applications
- Quick installation efficiency through Phillips No. 2 drive and coarse UNC threads that reduce assembly time
- Precise thread engagement ensured by Class 2A fit standards for consistent, reliable connections
- Full-threaded design maximizes grip length and distributes clamping force evenly across the entire fastener
- Regulatory compliance meets ASME B18.13 specifications and environmental standards for global industrial use
Professional Applications & Engineering Value
These zinc-plated steel pan head screws with internal-tooth lock washers provide engineered solutions for vibration-prone industrial assemblies. The combination of 8-32 UNC coarse threads and Class 2A fit ensures rapid installation while maintaining precise tolerance control in machinery, electrical enclosures, and automotive components. The fully threaded design maximizes surface contact area, distributing stress evenly to prevent joint failure. With 60,000 psi tensile strength and Rockwell B69 hardness, these Phillips drive screws withstand repetitive loading cycles in manufacturing equipment, assembly lines, and structural frameworks where vibration resistance is critical. The integrated locking mechanism eliminates the need for separate washers, streamlining inventory and reducing installation complexity.
Specification Summary & Compliance
This 8-32 x 1/2" screw features UNC coarse threads with Class 2A tolerance for precise fitment. Manufactured to ASME B18.13 specifications with zinc-plated steel construction and internal-tooth lock washer integration. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
