S-90402A195 8-32 x 7/16" 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: Integrated external-tooth lock washer prevents loosening under dynamic loads, reducing maintenance needs in machinery and equipment.
- Enhanced corrosion protection: Zinc-plated steel construction provides reliable rust resistance, extending service life in industrial environments.
- Superior load-bearing capacity: 60,000 psi tensile strength and Rockwell B69 hardness ensure dependable performance under high-stress applications.
- Easy installation and removal: Phillips No. 2 drive and pan head design offer excellent torque transmission and accessibility in confined spaces.
- Optimized thread engagement: Fully threaded UNC coarse spacing delivers faster assembly and stronger holding power in various materials.
- Broad compatibility: Class 2A thread fit ensures consistent performance with standard nuts and threaded components.
- Regulatory compliance: Meets ASME B18.13 specifications and environmental standards (RoHS 3, REACH) for global industrial use.
Professional Applications & Engineering Value
This zinc-plated steel pan head screw with external-tooth lock washer addresses critical challenges in industrial fastening, where vibration-induced loosening and corrosion compromise assembly integrity. The UNC coarse thread design enables rapid installation in metal, plastic, and composite substrates, while the fully threaded configuration maximizes pull-out resistance. Engineered for heavy-duty applications such as machinery guards, electrical enclosures, and automotive components, the screw’s 60,000 psi tensile strength and Rockwell B69 hardness provide reliable clamping force without deformation. The Phillips drive ensures efficient torque application, reducing stripping risks during high-volume assembly operations.
Specification Summary & Compliance
This 8-32 x 7/16" screw features precise Class 2A thread fit with UNC coarse spacing and right-hand threading. Manufacturing adheres to ASME B18.13 standards, ensuring dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing for industrial procurement.
