Commonly Hexagonal Heavy-series nuts used with studs. The non-bearing face of a nut is chamfered, while load Bearing face is finished with a washer face or may be chamfered.
Nuts may be machined from the same material as stud or may be of a compatible grade of ASTM A194
ASTM A194 standard lists the compatible material grades for nuts that used with stud & bolt.
Most widely used material grades are ASTM A194 Gr 2,2H,2HM,8,8M
What are Heavy Hex Nuts?
Heavy hex nuts are six-sided (hexagonal) internally threaded fasteners and larger versions of common/standard hex nuts. They are widely used for structural applications and because of this, heavy hex nuts are also known as structural nuts. Hex-heavy nuts are used for high-strength threaded fastening with large diameters. They are thicker and wider than standard hex nuts.
Similar to all other nuts, the heavy hex nuts are also used along with other fasteners mainly with a bolt to secure two or more materials together. To provide a long-lasting experience, heavy hex nuts are produced in zinc, plain, stainless steel, and galvanized finishes.
Paired with heavy hex bolts, these types of nuts are most common in construction and engineering applications. Hex-heavy nuts are available in various grades and selected based on the application.
Heavy Hex Nut Standards and Specifications
The most popular Heavy Hex nut standard is the ASME B18.2.2 which covers the complete general and dimensional data for the various types of inch series square and hex nuts. Widely used ASTM standards that cover the Heavey Hex Nuts are:
ASTM A194
ASTM A563
Heavy Hex Nut Dimensions
Heavy hex nut dimensions basically consist of three specific dimensions as listed below:
Nut thickness (T)
Width across flats (F), and
Width across corners (C)
| Material | Carbon steel & stainless steel |
| Size | M3-M100; 1/4-4″ |
| Standard | GB,GB/T,DIN,JIS,BSW,ANSI,ISO & non-standard products |
| Surface | Plain, Yellow zinc, black phosphated, grey phosphated, nickel plating |
| Packing | AS you required |
| Specifications | Various shape size according to clients’ requirement |
| Professional | We are specialize in hardware products and have more than 10 years experience in this field |
| Service | If you have any problems or services about our products pls let us know without any hesitation |
| Material | 1. Stainless Steel: SUS201, SUS304, SUS316, SUS410 2. Carbon Steel:C1006,C1008,C1010,C1018,C1022,C10B21,C10B33,C1035,C1045, C435#,40CrMo,42CrMo 3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200CuZn37), C28000(CuZn40) 4. Bronze: C51000, C52100, C54400, etc 5. Aluminum: Al6061, Al6063 etc Aluminum Alloy: Al6061, Al6063 etc 6. Titanium and Titanium Alloy: TAD,TA1-TA8,TB2,TC1-TC10 7. Alloy steel: SCM435,C10B21,C10B33 8. Iron:1213,12L14,1215,etc |
|
| Standard | DIN GB ISO JIS BA ANSI&SUS201, SUS304, SUS316, A2-70, A2-80, A4-80, 4.8 6.8 8.8 ,10.9,12.9 | |
| Size | M3-M100; 1/4-4″ | |
| Length | According to your needs | |
| Color | black,color zinc,etc | |
| Finish | Plain,Zinc Plated(Clear/Blue/Yellow/Black), Black oxide,Nickel,grey phosphate,nickel,ruspert,H.D.G,etc | |
| Grade | 4.8,8.8,A2,A4,etc | |
| Heat Treatment | Tempering,Hardening,Spheroidizing,Stress Relieving | |
| Specification | Various head style and sizes per your request | |
| Notice | Please lets know the Size, quantity, Material or Grade, surface finish, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us. | |
| Quality Certificate: | ISO9001:2000 | |
| Inspection quality system: | ISO standard, 100% Whole inspection through the production. | |
| equipment: | Hardness test, torque test, salt spray endurance test, mechanical sizes test,certification and etc as per your need. | |
| Inspection process: | Incoming quality control →Process Quality Control →Final Quality Control → Pre-shipment Quality Control | |
|
Standard |
Size |
Width Across Flats |
Length |
|
DIN6334 |
M4 |
7mm | 12mm |
|
M5 |
8mm | 15mm, 20mm | |
|
M6 |
8mm, 9mm, 10mm | 10mm, 15mm, 18mm, 20mm, 25mm, 30mm, 40mm | |
|
M7 |
9mm, 11mm | 15mm, 21mm, 25mm | |
|
M8 |
11mm, 12mm, 13mm, 14mm | 20mm, 24mm, 25mm, 28mm, 29mm, 30mm, 32mm, 40mm, 50mm | |
|
M9 |
11mm | 19mm | |
|
M10 |
13mm, 14mm, 17mm, 19mm | 20mm, 21mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm | |
|
M11 |
14mm | 24.5mm | |
|
M12 |
17mm, 19mm, 22mm | 20mm, 25mm, 30mm, 35mm, 36mm, 40mm, 45mm, 48mm, 50mm, 70mm | |
|
M13 |
17mm | 29mm | |
|
M14 |
19mm, 21mm, 22mm | 24mm, 25mm, 30mm, 38mm, 40mm, 42mm, 56mm | |
|
M15 |
19mm | 32mm | |
|
M16 |
22mm, 24mm | 30mm, 40mm, 48mm, 50mm, 60mm, 70mm | |
|
M18 |
27mm | 54mm | |
|
M20 |
30mm | 38mm, 50mm, 60mm, 80mm | |
|
M22 |
32mm | 66mm | |
|
M24 |
36mm | 50mm, 72mm, 80mm, 96mm | |
|
M27 |
41mm | 81mm | |
|
M30 |
46mm | 60mm, 90mm, 120mm | |
|
ANSI B18.2.2 |
1/4″ |
3/8″, 7/16″ | 13/32″, 3/4″, 7/8″, 1″ |
|
5/16″ |
3/8″, 7/16″, 15/32″, 1/2″ | 13/32″, 7/8″, 1″, 1-3/16″, 1-9/16″, 1-3/4″ | |
|
3/8″ |
1/2″, 9/16″, 5/8″ | 1″, 1-1/8″, 1-3/16″, 1-9/16″, 1-3/4″, 2″ | |
|
7/16″ |
5/8″, 11/16″ | 1-3/4″ | |
|
1/2″ |
5/8″, 3/4″, 11/16″, 3/4″ | 19/32″, 1-1/4″, 1-1/2″, 1-9/16″, 1-3/4″, 2″ | |
|
5/8″ |
1/2″, 3/4″, 13/16″, 15/16″ | 1″, 1-3/16″, 1-1/2″, 1-29/32″, 2″, 2-1/8″ | |
|
3/4″ |
15/16″, 1″, 1-3/32″ | 1-1/4″, 2″, 2-1/4″, 2-1/2″, 2-9/16″ | |
|
7/8″ |
1-1/8″, 1-1/4″, 1-5/16″ | 1″, 1-3/32″, 1-1/8″, 2-1/4″, 2-1/2″ | |
|
1″ |
1-1/4″ | 2-1/2″ | |
|
1-1/8″ |
1-5/8″, 1-11/16″ | 1-1/2″, 3″ | |
|
1-1/4″ |
1-5/8″ | 3″ | |
|
1-1/2″ |
2″ | 4″ |
Plain, Zinc-plated, Yellow Zinc-plated, Black Zinc-plated, Brass-plated, Cadmium, Geomet, Dacromet, HDG, Nylok, Black-Oxide, Nickel-Plating, Phosphatizing, Powder Coating and Electrophoresis.
