S-95345A585 12-24 x 1/2" ASME B18.13 Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer
Stainless 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: Integrated external-tooth lock washer prevents loosening under dynamic loads, ensuring long-term joint integrity.
- Excellent Corrosion Protection: 18-8 stainless steel construction with passivated finish resists rust and chemical exposure in harsh environments.
- High Tensile Strength: 70,000 psi tensile rating supports heavy-duty applications without failure.
- Secure & Efficient Drive: No. 3 Phillips drive provides reliable torque transfer and reduces cam-out risks during installation.
- Optimized Thread Engagement: Fully threaded UNC coarse design with Class 2A fit ensures fast assembly and consistent clamping force.
- Durable Locking System: 410 stainless steel washer with passivated finish maintains locking performance without galvanic corrosion.
- Broad Industrial Compliance: Meets ASME B18.13 specifications and environmental standards (RoHS 3/REACH) for global supply chain integration.
Professional Applications & Engineering Value
This 12-24 UNC rounded head screw with integrated external-tooth lock washer addresses critical vibration-induced loosening in machinery, electrical enclosures, and automotive assemblies. The 18-8 stainless steel core and passivated finish provide exceptional corrosion resistance, ideal for humid or chemically aggressive environments. Its fully threaded coarse design enables rapid installation in sheet metal, plastic housings, and structural frameworks, while the pan head profile offers a low-profile clamp with the No. 3 Phillips drive ensuring tool compatibility. By combining 70,000 psi tensile strength with a locking washer system, it eliminates the need for separate anti-vibration components, reducing inventory complexity and assembly time in high-cycle manufacturing.
Specification Summary & Compliance
Precision-manufactured to Class 2A thread fit with UNC coarse threads (12-24 size) and 1/2" length. Fully compliant with ASME B18.13 mechanical standards, RoHS 3 (2015/863/EU), and REACH (EC 1907/2006) environmental regulations. Lock washer fabricated from 410 stainless steel with passivated finish, ensuring material consistency and regulatory adherence for industrial and export applications.
