Heavy Hex Nuts

Anchor Bolts

Heavy hex nuts are larger and thicker than standard hex nuts, offering greater strength and load-bearing capacity. They are typically used in heavy-duty applications where extra durability is required.

  • Thicker and wider than standard hex nuts
  • Designed for high-strength and heavy-duty applications
  • Commonly used in structural and industrial projects
  • Provides superior load distribution
  • Made from high-strength materials

Heavy Hex Nuts Specification Table

SpecificationDescription
Heavy Hex Nuts StandardEU, IFI, CSN, Italian, ASME, British BS, Indian IS, ISO, DIN, Polish PN, SAE
Heavy Hex Nuts SizesM2 to M33
Heavy Hex Nuts Length3mm to 200mm
Heavy Hex Nuts MaterialsHigh Tensile, Carbon Steel, Stainless Steel, Inconel Fasteners, Incoloy Fasteners, Hastelloy Fasteners, Monel Fasteners, Silicon Bronze, Phosphor Bronze, Aluminium Bronze, Nickel, Brass, Copper, Copper Nickel, Nitronic, Nimonic, ASME, ASTM
Heavy Hex Nuts CoatingPTFE Coated Heavy Hex Nuts, Hot Dip Galvanized Heavy Hex Nuts, Yellow Zinc Plated Heavy Hex Nuts, Blue Zinc Plated Heavy Hex Nuts, Black Zinc Plated Heavy Hex Nuts, Zinc Cobalt Plated Heavy Hex Nuts, Aluminium Zinc Flake Coated Heavy Hex Nuts, Black Phosphate Heavy Hex Nuts, Zinc Plated Heavy Hex Nuts, Nickel Plated Heavy Hex Nuts
High Tensile Grades8.8 Heavy Hex Nuts, 10.9 Heavy Hex Nuts, 12.9 Heavy Hex Nuts, 14.9 Heavy Hex Nuts
Heavy Hex Nuts FormingHot Forged Heavy Hex Nuts & Cold Forged Heavy Hex Nuts

Heavy Hex Coupling Nuts Materials / Grades

MaterialsGrades
Stainless SteelASTM / ASME SA 312 GR. TP 304 , 304L , 304H, 309S ,309H , 310S, 310H , 316 , 316TI , 316H , 316 LN , 317 , 317L , 321 , 321H , 347 , 347 H , 904L .
High Tensile8.8, 10.9, 12.9, 14.9
Duplex SteelUNS NO S 31803, S 32205, S 32550, S 32750, S 32760.
Carbon SteelASTM / ASME A 335 GRP 1, P 5, P 9, P 11, P 12, P 22, P 23, P 91
Alloys SteelASTM / ASME A/SA 193 / 194 – B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M
Nickel AlloysNickel Alloys 200, Nickel Alloys 201
HastelloyHastelloy C-22, Hastelloy C-276, Hastelloy C-2000, Hastelloy C-4, Hastelloy X, Hastelloy B, Hastelloy N, Hastelloy G
InconelInconel 600, Inconel 601, Inconel 625, Inconel 625LCF, Inconel 686, Inconel 718, Inconel 800, Inconel 825, Inconel X-750 , Inconel 690, Inconel 602, Inconel 617, Inconel 925, Inconel A-289, Inconel AL-6XN, AL-904L

Heavy Hex Nuts Dimensions Chart:



Nominal Thread Size
F
C
H
Approximate Weight
Per Nut
Width Across Flats
Width Across Corners
Thickness
Basic
Max
Min
Max
Min
Basic
Max
Min
3/8
11/16
0.688
0.669
0.794
0.763
23/64
0.377
0.341
0.03
1/2
7/8
0.875
0.850
1.010
0.969
31/64
0.504
0.464
0.07
5/8
1-1/16
1.062
1.031
1.227
1.175
39/64
0.631
0.587
0.12
3/4
1-1/4
1.250
1.212
1.443
1.382
47/64
0.758
0.710
0.20
7/8
1-7/16
1.438
1.394
1.660
1.589
55/64
0.885
0.833
0.30
1
1-5/8
1.625
1.575
1.876
1.796
63/64
1.012
0.956
0.43
1-1/8
1-13/16
1.812
1.756
2.093
2.002
1-7/64
1.139
1.079
0.59
1-1/4
2
2.000
1.938
2.309
2.209
1-7/32
1.251
1.187
0.79
1-3/8
2-3/16
2.188
2.119
2.526
2.416
1-11/32
1.378
1.310
1.02
1-1/2
2-3/8
2.375
2.300
2.742
2.622
1-15/32
1.505
1.433
1.31
1-5/8
2-9/16
2.562
2.481
2.959
2.828
1-19/32
1.632
1.556
1.62
1-3/4
2-3/4
2.750
2.662
3.175
3.035
1-23/32
1.759
1.679
2.04
1-7/8
2-15/16
2.938
2.844
3.392
3.242
1-27/32
1.886
1.802
2.41
2
3-1/8
3.125
3.025
3.608
3.449
1-31/32
2.013
1.925
2.99
2-1/4
3-1/2
3.500
3.388
4.041
3.862
2-13/64
2.251
2.155
4.19
2-1/2
3-7/8
3.875
3.750
4.474
4.275
2-29/64
2.505
2.401
5.64
2-3/4
4-1/4
4.250
4.112
4.907
4.688
2-45/64
2.759
2.647
7.38
3
4-5/8
4.625
4.475
5.340
5.102
2-61/64
3.013
2.893
9.50
3-1/4
5
5.000
4.838
5.774
5.515
3-3/16
3.252
3.124
11.94
3-1/2
5-3/8
5.375
5.200
6.207
5.928
3-7/16
3.506
3.370
15.26
3-3/4
5-3/4
5.750
5.562
6.640
6.341
3-11/16
3.760
3.616
18.12
4
6-1/8
6.125
5.925
7.073
6.755
3-15/16
4.014
3.862
21.80

Heavy Hex Nut Applications:

  • Heavy-duty structural projects like bridges and high-rise buildings
  • Industrial machinery and equipment
  • Oil and gas infrastructure, including rigs and pipelines
  • Mining equipment and machinery
  • Marine and offshore structures
  • Heavy construction and engineering applications