S-90400A221 10-32 x 1/2" ASME B18.13 Steel Pan Head Phillips Screws with Spring Lock Washer
Steel Pan Head Phillips Screws with Spring 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 spring lock washer that maintains clamping force under dynamic loads
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in harsh environments
- High-strength performance with 60,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Precise thread engagement with Class 2A UNF fine threads ensuring reliable fastening and consistent torque values
- Optimized drive efficiency featuring Phillips No. 2 drive for secure tool engagement and reduced cam-out
- Full-thread design providing maximum grip length and load distribution across the entire fastener
- Comprehensive compliance meeting ASME B18.13 specifications and environmental regulations including RoHS 3
Professional Applications & Engineering Value
These 10-32 zinc-plated steel rounded head screws with integrated spring lock washer deliver exceptional engineering value in vibration-prone applications. The combination of UNF fine threads and Class 2A fit ensures precise alignment and consistent clamping force in machinery, electrical enclosures, and automotive assemblies. The zinc-plated steel construction provides reliable corrosion resistance while maintaining the 60,000 psi tensile strength required for heavy-duty fastening. The Phillips No. 2 drive offers efficient installation with standard tools, and the pan head design with spring lock washer effectively prevents loosening under continuous vibration, making these screws ideal for industrial equipment, manufacturing systems, and maintenance operations where reliability is critical.
Specification Summary & Compliance
This fastener features 10-32 UNF fine threads with Class 2A tolerance for precise fitment and fully threaded design for maximum engagement. Manufactured to ASME B18.13 specifications, these screws maintain dimensional accuracy and performance standards. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental responsibility and regulatory adherence for global industrial applications.
