3 3/4-12 A194 2H Heavy Hex Nut Plain Finish

#309918

3 3/4-12 A194 2H Heavy Hex Nut Plain Finish
Diameter Thread Threads Length Grade Finish Weight
3.75 (3 3/4) N/A 12 2H Plain Finish 18.12
Diameter 3.75 (3 3/4)
Thread 12
Length
Grade 2H
Finish Plain Finish
Weight 18.12

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Attributes

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  • 2H


Heavy Hex Nuts, or Structural Nuts, hold the world together — in charge of securing together buildings, bridges, and warehouses. Their job is to bolt I-beams to one another in order to raise structures. Heavy Hex Bolts provide a greater width across the flat compared to Finished Hex Bolts for a dispersed clamping load. Earnest offers Grades 5 and C, also available in lefty threads.

Heavy Hex Nut – Grade 5

  • Width across flat is one size larger than Finished Hex Nuts
  • Available in lefty thread
  • Rockwell hardness of Rc 32 max
  • Proof Load Strength Coarse Thread (UNC):
  • 1/4” to 1”: 133,000 psi
  • 1 1/8” to 1 1/2”: 116,000 psi
  • Proof Load Strength Fine Thread (UNF):
  • 1/4” to 1”: 120,000 psi
  • 1 1/8” to 1 1/2”: 105,000
  • Meets SAE J995 Grade 5 strength requirements
  • Dimensional requirements of ANSI B18.2.2

    • Structural Nut – Grade C

  • Bolts I-beams to construct buildings and bridges
  • Width across flat is once size larger than Finished Hex Bolts
  • Available in lefty thread
  • Rockwell hardness of Rc 32 max
  • Proof load strength of 144,000 psi min
  • Sizes range from 1/2” to 1 1/8”
  • Meets SAE J995 Grade 5 strength requirements
  • Dimensional requirements of ANSI B18.2.2

    • Heavy Hex Nut – Grade 8

  • Bolts I-beams to construct buildings and bridges
  • Width across flat is one size larger than Finished Hex Bolts
  • Available in lefty thread
  • Rockwell Hardness:
  • 1/4” to 5/8”: Rc 24/32
  • 3/4” to 1”: Rc 26/34
  • 1 1/8” to 1 1/2”: Rc 26/36
  • Proof Load Strength Coarse Thread (UNC):
  • 165,000 psi min
  • Proof Load Strength Fine Thread (UNF):
  • 150,000 psi min
  • SAE J995 Grade 8 strength requirements
  • Dimensional requirements of ANSI B18.2.2

    • Structural Nut – Grade 2H

  • Bolts I-beams to construct buildings and bridges
  • Width across flat is once size larger than Finished Hex Bolts
  • Available in lefty thread
  • Rockwell Hardness 1/4” to 1 1/2”: Rc24/35
  • Rockwell Hardness 1 5/8” to 3”: Rb95 – Rc 35
  • Proof Load: 175,000 psi min
  • Sizes range from 1/4” to 3”
  • Dimensional requirements of ANSI B18.2.2

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