GR8 Heavy Hex Nut

Heavy Nuts are used in the Petrochemical and Oil & Gas industry. Available in high strength alloy steel, stainless steel, duplex/super duplex and exotic materials and are fully certified and lot traceable.

United Fasteners can quickly produce non-stocked and special sizes quickly. Please send an enquiry for your Petrochemical specifications, application requirements and drawings and we will get back to you with a quote.


  • Metric: Dia M10 - M24
  • Imperial: Dia 5/16" - 2-1/2"
  • Threads: Metric, Imperial UN8, UNC
  • Pitch: Metric: 1.75 - 3/ Imperial: 8 - 18
  • Material/Finish: Stainless Steel & Xylan Red G304 Stainless Steel
  • Compliance: ASTM A194M Gr8/ ASTM A194M Gr8M/ ASTM A194 Gr8