S-90631A004 3-48 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through nylon insert locking technology, preventing loosening in high-motion environments
- Enhanced corrosion protection with zinc-plated steel construction for extended service life in industrial conditions
- Reliable high-temperature performance maintaining locking integrity up to 220°F (104°C) for demanding applications
- Precise thread engagement with Class 2B thread fit ensuring consistent, secure fastening across assemblies
- Industry-standard compatibility with UNC coarse threads and standard hex profile for easy integration
- Quick installation using standard tools with external hex drive design for efficient assembly processes
- Comprehensive regulatory compliance meeting RoHS 3 and REACH standards for global industrial use
Professional Applications & Engineering Value
These 3-48 UNC nylon insert locknuts deliver critical vibration resistance for machinery, automotive, and electrical assemblies where constant motion threatens fastener integrity. The zinc-plated steel construction provides durable corrosion protection while the nylon insert creates consistent friction against bolt threads, maintaining clamp force without damaging mating surfaces. Engineered with coarse thread spacing and Class 2B thread fit, these locknuts accommodate minor misalignments while ensuring reliable engagement. The external hex drive enables rapid installation with standard tools, reducing assembly time in production environments. With performance maintained up to 220°F, these components are ideal for engines, motors, and industrial equipment operating in demanding thermal conditions.
Specification Summary & Compliance
This locknut features 3-48 UNC coarse threads with Class 2B thread fit for consistent engagement across standard components. Dimensions include 1/4" width across flats and 9/64" height for compact installation. Manufactured to industry standards for nylon insert locknuts with right-hand thread direction. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial fastener applications.
