S-90631A003 2-56 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon insert locking mechanism for reliable performance in high-stress environments
• Enhanced corrosion protection through zinc-plated steel construction for extended service life in industrial settings
• High-temperature compatibility with nylon insert rated up to 220°F (104°C) for thermal stability in demanding applications
• Precise thread engagement with Class 2B fit UNC coarse threads ensuring consistent fastening and reduced cross-threading risks
• Easy installation and removal using standard tools thanks to external hex drive and standard hex nut profile
• Right-hand thread design compatible with common industrial components for straightforward assembly processes
• 1/4" width standard providing optimal wrench engagement and torque transmission during installation

Professional Applications & Engineering Value

These 2-56 nylon insert locknuts deliver critical vibration resistance in mechanical assemblies where loosening under dynamic loads poses operational risks. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, while the UNC coarse threads with Class 2B fit ensure reliable engagement even in high-cycle applications. The nylon insert locking mechanism maintains clamping force without damaging mating threads, making these locknuts ideal for machinery, automotive components, and electronic enclosures where temperature fluctuations up to 220°F occur. The external hex drive design enables efficient installation with common tools, reducing assembly time in production environments.

Specification Summary & Compliance

This locknut features precision UNC 2-56 coarse threads with Class 2B thread fit per ASME standards, ensuring dimensional accuracy and interchangeability. The 1/4" width and 9/64" height provide standardized wrench clearance. Manufactured from zinc-plated steel with right-hand thread direction, these components meet industry specifications for mechanical fasteners. The nylon insert locking system maintains performance within the specified 220°F maximum temperature range. Compliant with RoHS and REACH environmental standards for industrial use.