S-98190A114 1/4"-20 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 6/6 insert that maintains locking performance in dynamic applications
- High-temperature durability with insert rated to 250°F (121°C) for reliable performance in demanding environments
- Precise thread engagement with Class 2B fit ensuring consistent, reliable fastening across multiple installations
- Enhanced corrosion protection with black nylon cap that provides both aesthetic appeal and environmental resistance
- Industry-standard compatibility with 1/4"-20 UNC coarse threads for broad application across equipment and machinery
- Easy installation and removal with external hex drive design allowing standard wrench access in confined spaces
- Environmental compliance assurance meeting REACH and RoHS 3 standards for global manufacturing applications
Professional Applications & Engineering Value
This Grade 2 steel hex cap nut with nylon insert locking mechanism addresses critical vibration-induced loosening challenges in industrial equipment, automotive assemblies, and machinery maintenance. The Nylon 6/6 plastic insert creates consistent friction against mating threads, maintaining clamp load without damaging thread surfaces. With UNC coarse threads and Class 2B thread fit, this fastener delivers reliable performance in high-cycle applications while the 250°F temperature rating ensures integrity in environments where thermal cycling occurs. The external hex drive configuration provides tool accessibility in space-constrained assemblies, making it ideal for maintenance operations requiring repeated disassembly and reassembly.
Specification Summary & Compliance
This 1/4"-20 nylon insert lock nut features Class 2B thread fit per UNC standards with dimensions of 7/16" width and 31/64" height. Manufactured from Grade 2 steel with black nylon 6/6 cap, the fastener complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards. The right-hand thread direction and coarse thread spacing ensure compatibility with standard industrial components and equipment.
