S-90521A236 1/2"-20 ASME B18.2.2, ASTM A194 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Enhanced torque distribution through extra wide hex profile for secure fastening in high-vibration environments
- Superior load-bearing capacity with ASTM Grade 2H strength certification for heavy-duty applications
- Precision fine threading (1/2"-20 UNF) ensures tighter fit and better resistance to loosening
- Reliable thread engagement with Class 2B fit maintaining consistent performance under stress
- Full regulatory compliance meeting RoHS 3 and REACH standards for global industrial use
- Optimized wrench clearance with 7/8" width for easier installation in confined spaces
- Durable steel construction providing excellent corrosion resistance and long service life
Professional Applications & Engineering Value
This heavy-duty hex nut addresses critical engineering challenges in industrial assembly where vibration resistance and load distribution are paramount. The extra wide profile significantly increases surface contact area, preventing joint deformation under extreme torque conditions. Manufactured from ASTM Grade 2H steel, it maintains clamping force integrity in heavy machinery, construction equipment, and automotive applications. The 1/2"-20 UNF fine thread configuration provides superior resistance to vibrational loosening compared to coarse threads, while the Class 2B thread fit ensures consistent engagement without galling. This combination makes it ideal for precision industrial applications requiring reliable, maintenance-free fastening solutions.
Specification Summary & Compliance
This hex nut features 1/2"-20 UNF fine threads with Class 2B thread fit per ASME standards, ensuring precision tolerance matching. Manufacturing complies with ASME B18.2.2 dimensional specifications and ASTM A194 material requirements. The product meets ASTM Grade 2H mechanical properties for high-strength applications. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming suitability for regulated industrial markets. Dimensions maintain 7/8" width and 31/64" height per standard specifications.
