• Posted on

Standard Hex Nuts Vs Heavy Hex Nuts

Standard Hex Nuts vs Heavy Hex Nut

When selecting a nut, it's crucial to ensure it matches the bolt's specifications to achieve optimal performance. Properly matched components prevent loosening over time and distribute stress effectively. This ensures durability and prevents potential failures under heavy loads.

Improper fasteners can lead to catastrophic consequences, including equipment failure and safety hazards. Understanding the differences between standard and heavy hex nuts can help you choose the right option for your specific application.

Table of Contents

  • Standard Hex Nuts vs Heavy Hex Nuts
  • Dimension Chart of Heavy Hex Nut
  • Weight Chart of Hex Nuts
  • Specifications of SS Heavy Hex Nuts
  • Coating Process of Heavy Hex Nuts
  • Applications of Heavy Hex Nuts
  • Benefits of Heavy Hex Nuts
  • Grades of Hex Nuts
  • Comparison Between Standard and Heavy Hex Nuts
  • Mechanical Properties of Heavy Hex Nuts vs Hex Nuts
  • Advantages of Steel Heavy Hex Nuts
  • Characteristics of Standard and Heavy Hex Nuts

Standard Hex Nuts vs Heavy Hex Nuts

Standard Hex Nuts vs Heavy Hex Nuts Specifications

Standard Hex Nuts Heavy Hex Nuts
Hex Nut Heavy Hex Nut
Shape Same shape as heavy hex nuts Same shape as standard hex nuts
Width Across Flats and Corners Smaller for the same nominal size Larger for the same nominal size
Thickness Thinner for the same nominal size Slightly thicker for the same nominal size
Diameter Across Flats Smaller 1/8” larger than standard hex nuts
Tool Requirements Standard wrenches and sockets Larger wrenches and sockets required
Proof Load Strength Lower compared to heavy hex nuts Higher compared to standard hex nuts

Check Dimensions and Weight Chart of Heavy Hex Nut

Heavy hex nuts are designed to be larger and broader than standard hex nuts, making them suitable for high-stress applications involving larger diameter bolts. Knowing their dimensions ensures proper fitting and stability, reducing risks of misalignment or structural failure.

Understanding their weight is equally important in industries like construction and engineering, where structural integrity and safety are paramount.

Dimension Chart of Heavy Hex Nut

Heavy Hex Nut Dimension

Bolt Dia. 1⁄2 5⁄8 3⁄4 7⁄8 13⁄8 11⁄2 1 11⁄8 11⁄4 15⁄8 13⁄4 31⁄4 31⁄2 2 21⁄2 23⁄4 3 33⁄4 4
F Width Across Flats Basic 7⁄8 11⁄16 11⁄4 17⁄16 23⁄16 23⁄8 15⁄8 113⁄16 2 29⁄16 23⁄4 5 53⁄8 31⁄8 37⁄8 41⁄4 45⁄8 53⁄4 61⁄8
Max 0.875 1.062 1.25 1.438 2.188 2.375 1.625 1.812 2 2.562 2.75 5 5.375 3 3.875 4.25 4.625 5.75 6.125
Min 0.85 1.031 1.212 1.394 2.119 2.3 1.575 1.756 1.938 2.481 2.662 4.838 5.2 3 3.75 4.112 4.475 5.562 5.925
C Width Across Corners Max 1.01 1.227 1.443 1.66 2.526 2.742 1.876 2.093 2.309 2.959 3.175 5.774 6.207 4 4.474 4.907 5.34 6.64 7.073
Min 0.969 1.175 1.382 1.589 2.416 2.622 1.796 2.002 2.209 2.828 3.035 5.515 5.928 3 4.275 4.688 5.102 6.341 6.755
H Thickness Basic 31⁄64 39⁄64 47⁄64 55⁄64 111⁄32 115⁄32 63⁄64 17⁄64 17⁄32 119⁄32 123⁄32 33⁄16 37⁄16 131⁄32 229⁄64 245⁄64 261⁄64 311⁄16 315⁄16
Max 0.504 0.631 0.758 0.885 1.378 1.505 1.012 1.139 1.251 1.632 1.759 3.252 3.506 2 2.505 2.759 3.013 3.76 4.014
Min 0.464 0.587 0.71 0.833 1.31 1.433 0.956 1.079 1.187 1.556 1.679 3.124 3.37 2 2.401 2.647 2.893 3.616 3.862
Weight(lbs.) 0.07 0.12 0.2 0.3 1.02 1.31 0.43 0.59 0.79 1.62 2.04 11.94 15.26 3 5.64 7.38 9.5 18.12 21.8
Part Numbers A563A Import Plain 11729 11731 11733 11735 11743 11745 11737 11739 11741 17750 11747 18395 18495 # 11753 15864 15863 – 11755
Galv. 11730 11732 11734 11736 11744 11746 11738 11740 11742 17751 11748 – – # 11754 16041 16042 – 11756
A1942H Domestic Plain – 16358 16360 16362 16374 16378 16364 16366 16370 16380 16384 – – # 16398 16400 16402 – 16404
Galv. – 16359 16361 16363 – – 16365 – – 16381 16385 – – # 16399 16401 16403 – 16405
Import Plain 11761 11763 11765 11767 11775 11777 11769 11771 11773 11779 12549 – – # 12553 12555 12601 – –
Galv. 11762 11764 11766 11768 11776 11778 11770 11772 11774 11780 12550 – – # 12554 12556 12602 – –
A563DH Domestic Plain 16356 – – – – – – – 16380 16384 – – # 16398 16400 16402 – 16404
Galv. 18345 18346 18347 18348 16375 16379 18349 16367 16371 16381 16385 – – # 16399 16401 16403 – 16405

Weight Chart of Hex Nuts

Weight Chart of Hex Nuts

METRIC RANGE – DIMENSION (mm) AND WEIGHT (Kg) PER 100 PIECES
d M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 M48 M52 M56 M60 M64 M68 M72 M76 M80 M85
S Min 12.73 16.73 18.67 21.67 23.67 26.67 29.67 31.61 35.38 40.38 45.38 49.26 54.26 59.26 64.26 69.26 74.26 79.26 84.15 89.13 94.13 99.13 104.13 109.13 114.13 119.13
Max 13 17 19 22 24 27 30 32 36 41 46 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
e Min 14.38 18.9 21.1 24.49 26.75 30.14 33.53 35.72 39.98 45.63 51.28 55.8 61.31 66.95 72.61 78.26 83.91 89.56 95.07 100.72 106.37 112.02 117.67 123.32 128.97 134.62
Max 15 19.6 21.9 25.4 27.7 31.1 34.6 36.9 41.5 47.3 53.1 57.7 63.5 69.3 75 80.8 86.5 92.4 98.1 103.9 109.7 115.5 121.25 127 132.8 138.6
m Min 7.64 9.64 11.57 13.57 15.57 17.57 19.48 21.48 23.48 26.48 29.48 32.38 35.38 38.38 41.38 44.38 47.38 51.38 55.26 59.26 63.26 67.26 71.26 75.26 79.26 84.13
Max 8 10 12 14 16 18 20 22 24 27 30 33 36 39 42 45 48 52 56 60 64 68 72 76 80 85
WEIGHT 0.65 1.43 2.03 3.14 4.05 5.82 7.91 9.49 13.7 20 28.4 36.1 48.3 62.3 79.5 98.8 122 147 177 208 245 284 327 374 425 483

Specifications of SS Heavy Hex Nuts

  • Metric Size Range: M3 – M48
  • Imperial Size: 3/8 to 8"
  • Surface Finish: Cadmium zinc plated, Galvanized, Hot dip Galvanized, Nickel Plated, Blackening
  • Material: Stainless steel, Carbon, Alloy Steel, API 5L Copper, Duplex, Titanium
  • Threads: Metric, BSW, BSF, UNC, UNF
  • Test Certificates: EN 10204 / 3.1B, Raw Materials Certificate, Third Party Inspection Report, 100% Radiography Test Report
  • Applications: Heavy Industry, Marine, Ship Building, Oil & Gas Projects

Coating Process of Heavy Hex Nuts

Coating Process
  • PTFE Coated
  • Hot Dip Galvanized
  • Yellow Zinc Plated
  • Blue Zinc Plated
  • Black Zinc Plated
  • Zinc Cobalt Plated
  • Aluminum Zinc Flake Coated
  • Black Phosphate
  • Zinc Plated
  • Nickel Plated

Heavy Hex Nuts Are Typically Made From High-grade Steel and Used With Heavy Bolts

High-grade steel provides heavy hex nuts with the strength and durability necessary for applications requiring resistance to high bending loads and pressures. The combination of heavy hex nuts and bolts offers a robust and reliable attachment that can withstand harsh conditions and prevent structural damage.

In industries like construction, transportation, and marine applications, heavy hex nuts play a critical role in ensuring the safety and reliability of equipment and structures.

Applications of Heavy Hex Nuts

Application Area Uses and Examples
Construction - Structural Steel
- Heavy Machinery
Transportation - Railroads
- Automotive
Industrial - Machinery
- Pipelines
Energy Sector - Oil and Gas
- Renewable Energy
High-Strength Bolting - High-Stress Fasteners
Mining - Mining Equipment
Marine Applications - Shipbuilding
- Offshore Platforms

Key Benefits of Heavy Hex Nuts

  • Increased Strength: Handles higher loads and stresses compared to standard hex nuts.
  • Durability: More resistant to deformation under load.
  • Better Bearing Surface: Offers a larger surface area for better load distribution.

Reference Standard Hex Nut Sizes and Torque Chart

Standard hex nut sizes are defined by their minimum diameter and thread pitch, ensuring compatibility with the corresponding bolt or screw. A torque chart specifies the tightening values for hex nuts to apply precise clamping force in bolted joints. Accurate torque is essential for maintaining joint strength and preventing over-tightening or loosening.

Standard and Grades of Hex Nuts

Material Standards Grades
Stainless Steel Hex Nuts ASTM / ASME A/SA 193 / 194 B 8 (304), B 8C (SS 347), B 8M (SS 316), B 8 T (SS 321), A 2, A 4
Nickel Alloy Hex Nuts ASTM / ASME SB 160 / 164 / 425 / 166 / 446 / 574 / 472 UNS 2200 (NICKEL 200) / UNS 2201 (NICKEL 201), UNS 4400 (MONEL 400), UNS 8825 (INCONEL 825), UNS 6600 (INCONEL 600) / UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 8020 (ALLOY 20 / 20 CB 3)
Alloy Steel Hex Nuts ASTM / ASME A/SA 193 / 194 GR B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M
Standard Hex Nuts Have Smaller Widths Compared to Heavy Hex Nuts

Heavy hex nuts are wider across the flats and corners, and slightly thicker than standard hex nuts. Their larger design enables them to handle higher pressure loads compared to standard hex nuts.

Differences Between Standard and Heavy Hex Nuts

Standard Hex Nut vs Heavy Hex Nuts

Standard Hex Nuts

  • Appearance: Smaller width compared to heavy hex nuts.
  • Strength Compatibility: Stronger nuts with weaker bolts are acceptable.
  • Risk of

    Intelligent Floor Washers

    Intelligent Floor Washers,Smart Floor Scrubber,Household Smart Floor Scrubber,Bionic Self Cleaning Floor Scrubber,Household floor scrubber

    Grey Whale Intelligent Appliances (Shenzhen) Co., Ltd , https://www.szgraywhale.com