S-91078A029 1/4"-20 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for reliable performance in humid or industrial environments
• Reduced weight and material usage with thin profile design while maintaining full fastener functionality
• Secure fastening performance with Class 2B thread fit ensuring consistent engagement and vibration resistance
• Wide compatibility with UNC coarse thread pattern for easy installation and interchangeability with standard components
• Durable mechanical properties meeting Grade 2 strength requirements for general purpose applications
• Quick installation and removal with standard external hex drive compatible with common wrench tools
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This 1/4"-20 UNC thin hex nut delivers exceptional value in space-constrained assemblies where standard hex nuts prove too bulky. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, machinery, and electrical enclosures exposed to moisture. Engineered with Class 2B thread fit, these fasteners maintain consistent clamping force in vibrating environments common to automotive, industrial maintenance, and manufacturing applications. The coarse thread design enables rapid installation while resisting cross-threading, making them ideal for production lines and field service scenarios. Their thin profile allows use in tight clearance situations without compromising the mechanical integrity provided by the Grade 2 strength rating.

Specification Summary & Compliance

This hex nut features precise 1/4"-20 UNC coarse threads with Class 2B thread fit per ASME B18.2.2 standards, ensuring dimensional accuracy and reliable performance. The fastener meets Grade 2 mechanical properties for general purpose applications. Physical dimensions include 7/16" width across flats and 5/32" height. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making these components suitable for use in regulated industries and international markets.