S-98190A270 3/8"-24 Cap Nuts
Cap Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Finish & Compliance Parameters
Cap Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance with nylon insert locking that maintains secure fastening in high-motion environments
- High-temperature durability with nylon insert rated for reliable performance up to 250°F (121°C)
- Enhanced corrosion protection through zinc-plated steel construction and black nylon cap
- Precision thread engagement with Class 2B UNF fine threads ensuring consistent, reliable connections
- Heavy-duty load capacity meeting Grade 5 strength requirements for demanding applications
- Professional aesthetic finish with black nylon cap providing both visual appeal and additional protection
- Easy installation and removal with standard external hex drive compatible with common tools
Professional Applications & Engineering Value
This Grade 5 nylon insert lock cap nut delivers exceptional engineering value by solving critical industrial fastening challenges. The combination of zinc-plated steel construction and black nylon 6/6 plastic cap provides dual-layer protection against corrosion while maintaining structural integrity. The precision 3/8"-24 UNF fine threads with Class 2B fit ensure optimal engagement with mating components, preventing loosening under vibration - a common failure point in machinery, automotive, and industrial equipment. The nylon insert locking mechanism maintains consistent clamping force even in high-temperature environments up to 250°F, making it ideal for engine compartments, manufacturing equipment, and transportation applications where thermal cycling and vibration are constant concerns.
Specification Summary & Compliance
This cap nut features precision 3/8"-24 UNF fine threads with Class 2B thread fit for consistent engagement and reliable performance. Manufactured to meet Grade 5 strength requirements with standard external hex drive configuration. The nylon 6/6 insert maintains locking capability up to 250°F maximum temperature. Complies with industry standards for UNF thread specifications and features a 9/16" width and 5/8" height for standardized installation. The zinc-plated steel construction provides corrosion resistance while meeting industrial fastener requirements for heavy-duty applications.
