S-98190A210 5/16"-18 Cap Nuts
Cap Nuts
Image may differ from product. See technical specification for details.
Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Finish & Compliance Parameters
Cap Parameters
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior vibration resistance with nylon insert locking that maintains secure fastening under dynamic loads
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in harsh environments
- High-temperature compatibility with nylon inserts rated up to 250°F for reliable performance in demanding applications
- Precise thread engagement with Class 2B thread fit ensuring consistent, reliable connections every time
- Quick installation and removal via external hex drive design for efficient maintenance and assembly operations
- Dual-material protection combining steel strength with nylon-6/6 plastic cap for both mechanical security and aesthetic finish
- Standard UNC coarse threading providing excellent engagement and resistance to loosening in industrial settings
Professional Applications & Engineering Value
This nylon insert lock cap nut delivers critical engineering solutions where vibration-induced loosening compromises assembly integrity. The zinc-plated steel core provides structural strength while resisting environmental corrosion, making it ideal for outdoor equipment, machinery, and automotive applications. The nylon 6/6 insert creates consistent friction against mating threads, maintaining clamp force even under sustained vibration. With UNC coarse threads and Class 2B fit, these cap nuts ensure rapid installation and reliable performance in high-cycle production environments. The combination of external hex drive and protective black cap offers both installation convenience and finished appearance for consumer-facing products.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2B thread fit and UNC 5/16"-18 coarse threading. Complies with industry standards for Grade 2 strength classification and features right-hand thread direction. The zinc-plated finish and nylon-6/6 components meet common industrial requirements for corrosion protection and chemical resistance.
