S-91879A029 1/4"-20 ASME B18.2.2, ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• Exceptional load-bearing capacity meeting ASTM Grade 2H requirements for heavy-duty applications
• Enhanced wrench grip with extra-wide thin profile design for secure tightening and reduced slippage
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance in coarse thread assemblies
• Industry-standard compatibility conforming to ASME B18.2.2 specifications for seamless integration
• Environmental compliance assurance with RoHS 3 and REACH certifications for responsible manufacturing
• Optimized installation efficiency through standard external hex drive design for quick assembly

Professional Applications & Engineering Value

This 1/4"-20 UNC hex nut delivers critical engineering advantages through its zinc-plated steel construction and ASTM Grade 2H certification. The combination of coarse thread design and Class 2B thread fit provides superior vibration resistance in heavy machinery, automotive assemblies, and structural frameworks where external hex drive accessibility is essential. The extra-wide thin profile maximizes contact surface while minimizing weight, addressing common challenges of space-constrained applications. Engineered to withstand extreme mechanical stress while maintaining corrosion resistance, these nuts prevent costly downtime in manufacturing, construction, and industrial maintenance operations requiring heavy-duty fastening solutions.

Specification Summary & Compliance

Manufactured to precise dimensional standards with 1/4"-20 UNC coarse thread and Class 2B thread fit tolerance. Complies with ASME B18.2.2 dimensional specifications and ASTM A194 material standards. Meets ASTM Grade 2H strength classification for high-strength applications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Dimensions: 1/2" width × 11/64" height with right-hand thread direction.