Manufacturer & supplier of ASME SA 194 Gr 8 Heavy Hex Nuts Material in india
ASTM A194 Grade 8 Nuts belong to the specification for high pressure and high temperature services. Viha Steel & Forging is a leading manufacturer and supplier of the different types of ASME SA 194 Gr 8 Nut fasteners. The size of the nuts range from 2mm to 20mm and the diameters range from 4mm to 30mm. The ASTM A194 Grade 8 Heavy Hex Nuts are strong and they are used with high torque force for tightening them.
The material has carbon, manganese, silicon, phosphorus, sulfur, and 18% chromium with 8% nickel. The sa 194 gr b8 fasteners is made from 304 grade austenitic stainless steel. The chromium and nickel content of the material accounts for the high tensile strength and corrosion resistance. The minimum tensile strength of the SA 194 Grade 8MLCuN Nut and other fasteners is 550MPa and the minimum yield strength is 240MPa with 30% elongation rate and 223 BHN hardness value.
There are different types such as the ASTM A194 Gr. 8T Nut is used in petroleum, power generation, water supply and other domestic, commercial and industrial applications. The fasteners are strong and corrosion resistant even at elevated temperatures. The SA 194 Grade 8 Specification allows the fasteners to operate up to 450 degrees Celsius temperature. Please feel free to contact us for more information on the different types of fasteners and their prices.
Table Of Content
- Standard: ASME/ANSI B18.2.2; DIN439
- Size: 1/4''–1-1/2’’; M6 – M42
- Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass
- Grade: ASTM A563 Gr. DH; SAE J995 Gr.5.8
- Thread: M, UNC, UNF
- Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G.
Material |
Specification |
Standards |
Size |
Length |
ASTM A194 Grade 8 Heavy Hex Nuts |
IS BS ASTM |
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160 |
3 mm to 200 mm |
Stud Bolt Grade |
ASTM A194 Nuts |
Washers |
L7 |
A194 Grade 4 or 7 |
F436 |
L43 |
A194 Grade 4 or 7 |
F436 |
B8 Class 1 |
A194 Grade 8 |
SS304 |
B8M Class 1 |
A194 Grade 8M |
SS316 |
B8 Class 2 |
A194 Grade 8 |
SS304 |
B8M Class 2 |
A194 Grade 8M |
SS316 |
B7 |
A194 Grade 2H |
F436 |
B7M |
A194 Grade 2HM |
F436 |
B16 |
A194 Grade 4 or Grade 7 |
F436 |
Call for small piece of SA 194 Gr 8 Nut Material to test before buying
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ASTM A194 Grade 8 Nuts |
Astm A194 GR.8 Hex Nuts |
sa 194 gr b8 Coupler Nuts |
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Astm A194 GR.8 Lock Nut |
ASME SA194 Gr 8 Nylon Insert Nut |
GR 8 Self Locking Nuts |
View latest price & ready sizes of SA 194 Gr 8MLCuN Nut Ex Mumbai
| Description | Per Unit (INR) | Price in USD | Price in Driham |
|---|---|---|---|
| FASTENERS-STUD BOLT ASTM A320-B8 CLASS 2 C/W 2 HEAVY HEX NUT ASTM A194 GRADE 8 (NOM.LGTH) 2-3/4 X 24.75 (QTY- 18 SET) | 400 | 5.47 | 20.08 |
| FASTENERS-STUD BOLT ASTM A320-B8 CLASS 2 C/W 2 HEAVY HEX NUT ASTM A194 GRADE 8 (NOM.LGTH) 2-3/4 X 32.5 -(QTY- 17 SET) | 400 | 5.47 | 20.08 |
| HIGH TENSILE GRADE 8 UNC GALVANISED NUT | 511 | 6.98 | 25.65 |
| NUT (M24) (GRADE 8) (5000 PCS) | 394 | 5.38 | 19.78 |
| NUT, HEX HEAD 7/16 IN -20 SAE FINE THREAD PHOSPHATE & OIL COATED GRADE 8 | 32 | 0.44 | 1.61 |
| Grade & Type | Brinell Hardness | Rockwell Hardness | |
|---|---|---|---|
| C Scale | B Scale | ||
| 8 | 126-300 | 32 max | 60 min |
| Element | ASTM A194 Grade 8 |
| Carbon | 0.08 max |
| Manganese | 2.00 Max |
| Phosphorus, max | 0.05% |
| Sulfur, max | 0.03% |
| Silicon | 1.00% max |
| Chromium | 18.0-20.0% |
| Nickel | 8.0-11.0% |
| Molybdenum | - |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 550 |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 240 |
| Elongation in 4D (El) | 30 |
| Reduction | 40 |
| Hardness – (BHN) | 223 |
| STANDARD | Grade | Designation |
| ASTM A194 | 8 | AISI 304 Stainless Steel |
| Nominal Size, inch | Threads per inch | Stress Area inch | Proof Load, lbf | |
|---|---|---|---|---|
| All Types of Grade 8 | ||||
| Heavy Hex | Hex | |||
| 1/4" | 20 | 0.0316 | 5570 | 4770 |
| 5/16" | 18 | 0.0524 | 9170 | 7860 |
| 3/8" | 16 | 0.0774 | 13560 | 11620 |
| 7/16" | 14 | 0.1063 | 18600 | 15940 |
| 1/2" | 13 | 0.1419 | 24830 | 21280 |
| 9/16" | 12 | 0.1820 | 31850 | 27300 |
| 5/8" | 11 | 0.2260 | 39550 | 33900 |
| 3/4" | 10 | 0.3340 | 58450 | 50100 |
| 7/8" | 9 | 0.4620 | 80850 | 69300 |
| 1" | 8 | 0.606 | 106000 | 90900 |
| 1 1/8" | 8 | 0.7900 | 138200 | 118500 |
| 1 1/4" | 8 | 1.0000 | 175000 | 150000 |
| 1 3/8" | 8 | 1.2330 | 215800 | 185000 |
| 1 1/2" | 8 | 1.492 | 261100 | 223800 |
| Grade | Tensile Class | Raw Material |
|---|---|---|
| B5 | 4-6% Chromium Ferritic Steel | |
| B6 | 13% Chromium Ferritic Steel | |
| B6X | 13% Chromium Ferritic Steel | |
| B7 | Chromium Molybdenum Alloy Steel, Quenched & Tempered | |
| B7M | Chromium Molybdenum Alloy Steel, Quenched & Tempered | |
| B16 | Chromium-molybdenum-vanadium Alloy Steel, Quenched & Tempered | |
| B8 | Class 1 | AISI 304 Stainless Steel, Carbide Solution Treated |
| B8 | Class 2 | AISI 304 Stainless Steel, Carbide Solution Treated and Strain Hardened |
| B8A | AISI 304 Stainless Steel, Carbide solution treated in the finished condition | |
| B8C | Class 1 | AISI 347 Stainless Steel, Carbide Solution Treated |
| B8C | Class 2 | AISI 347 Stainless Steel, Carbide Solution Treated and Strained Hardened |
| B8CA | AISI 347 Stainless Steel, Carbide Solution Treated in Finished Condition | |
| B8M | Class 1 | AISI 316 Stainless Steel, Carbide Solution Treated |
| B8M | Class 2 | AISI 316 Stainless Steel, Carbide Solution Treated and Strain Hardened |
| B8MA | AISI 316 Stainless Steel, Carbide Solution Treated in Finished Condition | |
| B8M2 | AISI 316 Stainless Steel, Carbide Solution Treated and Strain Hardened | |
| B8M3 | AISI 316 Stainless Steel, Carbide Solution Treated and Strain Hardened | |
| B8P | Class 1 | AISI 305 Stainless Steel, Carbide Solution Treated |
| B8P | Class 2 | AISI 305 Stainless Steel, Carbide Solution Treated and Strain Hardened |
| B8PA | AISI 305 Stainless Steel, Carbide Solution Treated in Finished Condition | |
| B8N | AISI 304N Stainless Steel, Carbide Solution Treated | |
| B8N | AISI 304N Stainless Steel, Carbide Solution Treated and Strain Hardened | |
| B8MLCuN | AISI 304N Stainless Steel, Carbide Solution Treated | |
| B8MLCuN | UNS S31254 Stainless Steel, Carbide Solution Treated and Strain Hardened | |
| B8MLCuNA | UNS S31254 Stainless Steel, Carbide Solution Treated | |
| B8T | Class 1 | AISI 321 Stainless Steel, Carbide Solution Treated |
| B8T | Class 2 | AISI 321 Stainless Steel, Carbide Solution Treated and Strain Hardened |
| B8TA | AISI 321 Stainless Steel, Carbide Solution Treated in Finished Condition | |
| B8R | Nitronic 50/UNS S20910 Stainless Steel, Carbide Solution Treated | |
| B8RA | Nitronic 50/UNS S20910 Stainless Steel, Carbide Solution Treated in Finished Condition | |
| B8S | Nitronic 60/UNS S21800 Stainless Steel, Carbide Solution Treated | |
| B8SA | Nitronic 60/UNS S21800 Stainless Steel, Carbide Solution Treated | |
| B8LN | AISI 304LN Stainless Steel, Carbide Solution Treated | |
| B8LNA | AISI 304LN Stainless Steel, Carbide Solution Treated in Finished Condition | |
| B8MLN | AISI 316LN Stainless Steel, Carbide Solution Treated | |
| B8MLNA | AISI 316LN Stainless Steel, Carbide Solution Treated in Finished Condition | |
| B8CLN | AISI 347LN Stainless Steel, Carbide Solution Treated | |
| B8CLNA | AISI 347LN Stainless Steel, Carbide Solution Treated in Finished Condition |
Available ASTM A194 Gr. 8T Nut stock, Always check SA 194 Gr 8 Fasteners Specification
ASTM A194 Grade 8 Nuts Marking
| Grade Type | Hot Forged or Cold Punched Nuts | Nuts Machined from Bar Stock |
|---|---|---|
| 8 | 8 | 8B |
Grade 8 Heavy Hex Nut nominal Size or Basic Major Thread Diameter |
F |
G |
H |
||||||
Width Across Flats |
Width Across Corners |
Thickness |
|||||||
Basic |
Max |
Min |
Max |
Min |
Basic |
Max |
Min |
||
1/4 |
.2500 |
1/2 |
.500 |
.488 |
.577 |
.556 |
15/64 |
.250 |
.218 |
5/16 |
.3125 |
9/16 |
.562 |
.546 |
.650 |
.622 |
19/64 |
.314 |
.280 |
3/8 |
.3750 |
11/16 |
.688 |
.669 |
.794 |
.763 |
23/64 |
.377 |
.341 |
7/16 |
.4375 |
3/4 |
.750 |
.728 |
.866 |
.830 |
27/64 |
.441 |
.403 |
1/2 |
.5000 |
7/8 |
.875 |
.850 |
1.010 |
.969 |
31/64 |
.504 |
.464 |
9/16 |
.5625 |
15/16 |
.938 |
.909 |
1.083 |
1.037 |
35/64 |
.568 |
.526 |
5/8 |
.6250 |
1-1/16 |
1.062 |
1.031 |
1.227 |
1.175 |
39/64 |
.631 |
.587 |
3/4 |
.7500 |
1-1/4 |
1.250 |
1.212 |
1.443 |
1.382 |
47/64 |
.758 |
.710 |
7/8 |
.8750 |
1-7/16 |
1.438 |
1.394 |
1.660 |
1.589 |
55/64 |
.885 |
.833 |
1 |
1.0000 |
1-5/8 |
1.325 |
1.575 |
1.876 |
1.796 |
63/64 |
1.012 |
.956 |
1-1/8 |
1.1250 |
1-13/16 |
1.812 |
1.756 |
2.093 |
2.002 |
1-7/64 |
1.139 |
1.079 |
1-1/4 |
1.2500 |
2 |
2.000 |
1.938 |
2.309 |
2.209 |
1-7/32 |
1.251 |
1.187 |
1-3/8 |
1.3750 |
2-3/16 |
2.188 |
2.119 |
2.526 |
2.416 |
1-11/32 |
1.378 |
1.460 |
1-1/2 |
1.5000 |
2-3/8 |
2.375 |
2.300 |
2.742 |
2.622 |
1-15/32 |
1.505 |
1.433 |
1-5/8 |
1.6250 |
2-9/16 |
2.562 |
2.481 |
2.959 |
2.828 |
1-19/32 |
1.632 |
1.556 |
1-3/4 |
1.7500 |
2-3/4 |
2.750 |
2.662 |
3.175 |
3.035 |
1-23/32 |
1.759 |
1.679 |
2 |
2.0000 |
3-1/8 |
3.125 |
3.025 |
3.608 |
3.449 |
1-31/32 |
2.013 |
1.925 |
2-1/4 |
2.2500 |
3-1/2 |
3.500 |
3.388 |
4.041 |
3.862 |
2-13/64 |
2.251 |
2.155 |
2-1/2 |
2.5000 |
3-7/8 |
3.875 |
3.750 |
4.474 |
4.275 |
2-29/64 |
2.505 |
2.401 |
2-3/4 |
2.7500 |
4-1/4 |
4.250 |
4.112 |
4.907 |
4.688 |
2-45/64 |
2.759 |
2.647 |
3 |
3.0000 |
4-5/8 |
4.625 |
4.475 |
5.340 |
5.102 |
2-61/64 |
3.013 |
2.893 |
3-1/4 |
3.2500 |
5 |
5.000 |
4.838 |
5.774 |
5.515 |
3-3/16 |
3.252 |
3.124 |
3-1/2 |
3.5000 |
5-3/8 |
5.375 |
5.200 |
6.207 |
5.928 |
3-7/16 |
3.506 |
3.370 |
3-3/4 |
3.7500 |
5-3/4 |
5.750 |
5.562 |
6.640 |
6.341 |
3-11/16 |
3.670 |
3.616 |
4 |
4.0000 |
6-1/8 |
6.125 |
5.925 |
7.073 |
6.755 |
3-15/16 |
4.014 |
3.862 |
Grade 8 Nuts Size (mm) |
Diameter* (mm) |
Height (mm) |
||
|---|---|---|---|---|
Hex Nut |
Jam Nut |
Nylock Nut |
||
2 |
4 |
1.6 |
1.2 |
- |
2.5 |
5 |
2 |
1.6 |
- |
3 |
5.5 |
2.4 |
1.8 |
4 |
4 |
7 |
3.2 |
2.2 |
5 |
5 |
8 |
4 |
2.7 |
5 |
6 |
10 |
5 |
3.2 |
6 |
7 |
11 |
5.5 |
3.5 |
- |
8 |
13 |
6.5 |
4 |
8 |
10 |
17 |
8 |
5 |
10 |
12 |
19 |
10 |
6 |
12 |
14 |
22 |
11 |
7 |
14 |
16 |
24 |
13 |
8 |
16 |
18 |
27 |
15 |
9 |
18.5 |
20 |
30 |
16 |
10 |
20 |
* This is the diameter across the flats. It is also the size of wrench to use. |
||||
**Grade 8 All measurements in millimeters**
Grade 8 Nominal Size or Basic Major Thread Diameter |
F |
G |
H |
||||||
Width Across Flats |
Width Across Corners |
Thickness |
|||||||
Basic |
Max |
Min |
Max |
Min |
Basic |
Max |
Min |
||
1/4 |
.2500 |
7/16 |
.438 |
.428 |
.505 |
.488 |
7/32 |
.226 |
.212 |
5/16 |
.3125 |
1/2 |
.500 |
.489 |
.577 |
.557 |
17/64 |
.273 |
.258 |
3/8 |
.3750 |
9/16 |
.562 |
.551 |
.650 |
.628 |
21/64 |
.337 |
.479 |
7/16 |
.4375 |
11/16 |
.688 |
.675 |
.794 |
.768 |
3/8 |
.385 |
.365 |
1/2 |
.5000 |
3/4 |
.750 |
.736 |
.866 |
.840 |
7/16 |
.448 |
.427 |
9/16 |
.5625 |
7/8 |
.875 |
.861 |
1.010 |
.982 |
31/64 |
.496 |
.473 |
5/8 |
.6250 |
15/16 |
.938 |
.922 |
1.083 |
1.051 |
35/64 |
.559 |
.535 |
3/4 |
.7500 |
1-1/8 |
1.125 |
1.088 |
1.299 |
1.240 |
41/64 |
.665 |
.617 |
7/8 |
.8750 |
1-5/16 |
1.312 |
1.269 |
1.516 |
1.447 |
3/4 |
.776 |
.724 |
1 |
1.0000 |
1-1/2 |
1.500 |
1.450 |
1.732 |
1.653 |
55/64 |
.887 |
.831 |
1-1/8 |
1.1250 |
1-11/16 |
1.688 |
1.631 |
1.949 |
1.859 |
31/32 |
.999 |
.939 |
1-3/8 |
1.3750 |
2-1/16 |
2.062 |
1.994 |
2.382 |
2.273 |
1-11/64 |
1.206 |
1.138 |
1-1/2 |
1.500 |
2-1/4 |
2.250 |
2.175 |
2.598 |
2.480 |
1-9/32 |
1.ASTM A194 GR. 8 |
1.245 |
1-5/8 |
1.6250 |
2-7/16 |
2.438 |
2.356 |
2.815 |
2.686 |
1-25/64 |
1.429 |
1.353 |
1-3/4 |
1.7500 |
2-5/8 |
2.625 |
2.538 |
3.031 |
2.893 |
1-1/2 |
1.540 |
1.460 |
2 |
2.0000 |
3 |
3.000 |
2.900 |
3.464 |
3.306 |
1-23/32 |
1.763 |
1.675 |
2-1/4 |
2.2500 |
3-3/8 |
3.375 |
3.263 |
3.897 |
3.719 |
1-15/16 |
1.986 |
1.890 |
2-1/2 |
2.5000 |
3-3/4 |
3.750 |
3.625 |
4.330 |
4.133 |
2-5/32 |
2.209 |
2.105 |
2-3/4 |
2.7500 |
4-1/8 |
4.125 |
3.988 |
4.763 |
4.546 |
2-3/8 |
2.431 |
2.319 |
UK, USA and Kingdom of Saudi Arabia are the Best market of ASTM A194 Grade 8 Fasteners
| Dammam -KSA, Indonesia, Philippines, Belgium | ASTM A194 Grade 8 Nuts with Washer |
| Qatar, France, Europe, Thailand | ASTM A194 Heavy Grade 2h Heavy Hex Nuts |
| Czechia, Germany, Thailand, Malaysia | ASTM A194 Grade 8 AISI Ss 316 Nuts |
| Malaysia, USA, Bangladesh, Finland | Grade 8 ASTM A194 Heavy Hex Nuts with Black Finish |
| South Africa, Saudi Arabia (KSA), Kuwait, Brazil | Stainless Steel 304/316 Heavy Hex Nuts ASTM A194 Grade 8 |
| Bahrain, South Africa, Singapore | Nuts ASTM A194 Grade 8, ASME B12.2.2 |
| Philippines, France, Australia, UK, Nigeria | ASTM A194 Grade B8 Black Oxide Heavy Hex Nuts |
| Oman, Malaysia,Hong Kong, UAE | ASTM A194/A194m Grade 8 Heavy Hex Nuts |
| Chile, Italy, Iran, Singapore | ASTM A194 Zinc Plated Carbon Steel Grade 8 Hex Nuts |
| United Arab Emirates (UAE), Turkey, Norway, Malaysia | Grade 8 ASTM A194 Heavy Hex Nuts with Black Finish |
| Netherlands, Malaysia, Russia, Dubai | Stainless Steel ASTM A194 Grade Dh A563 Heavy Hex Nuts PTFE / Xylan Nuts |
| Egypt, Spain, Mexico, UK | ASME B18.2.2 Heavy Hexagon Nuts ASTM A194 Grade 8 |
| United Kingdom -UK, Europe, Malaysia, UAE | ASTM A194 Grade 8 Hot DIP Galvanized Heavy Hexagon Nuts |
| Grade 8 Nuts Identification Marking 5 | ASTM A194 Grade 8 Nuts Specification | ASTM A194 Grade 8 Nuts Material | Nominal Size, In. | Tempering Temp. °F | Proof Load Stress, ksi | Hardness Rockwell | |
|---|---|---|---|---|---|---|---|
| Min | Max | ||||||
 |
ASTM A194 Grade 8 Nuts | Stainless AISI 304 | 1/4 - 4 | - | 80 | 126 | 300 |
A194 Grade 8 Nut Material can be manufactured as required with short lead times.
| Grade 8 Size | Finished Hex Nuts | Heavy Hex Nuts | Finished Jam Nuts | Heavy Hex Jam Nuts | Square Nuts | Heavy Square Nuts |
| 1/2" Nuts | 3.75 | 6.54 | 2.62 | 4.00 | 5.78 | 7.87 |
| 5/8" Nuts | 7.33 | 11.9 | 4.93 | 6.96 | 10.8 | 14.3 |
| 3/4" Nuts | 11.9 | 19.3 | 7.70 | 11.0 | 15.4 | 23.5 |
| 7/8" Nuts | 19.0 | 29.7 | 12.0 | 16.7 | 24.5 | 36.2 |
| 1" Nuts | 28.3 | 42.5 | 17.6 | 23.5 | 36.3 | 51.5 |
| 11/8" Nuts | 40.3 | 59.2 | 24.7 | 32.4 | 52.5 | 72.4 |
| 11/4" Nuts | 54.3 | 78.6 | 36.1 | 45.8 | 70.6 | 95.5 |
| 13/8" Nuts | 73.0 | 102 | 47.9 | 59.3 | 94.5 | 125.0 |
| 11/2" Nuts | 94.3 | 131 | 60.9 | 74.8 | 122 | 161 |
| 15/8" Nuts | 162 | 91.6 | ||||
| 13/4" Nuts | 151 | 204 | 100 | 114 | ||
| 17/8" Nuts | 241 | 134 | ||||
| 2" Nuts | 224 | 299 | 140 | 165 | ||
| 21/4" Nuts | 419 | 227 | ||||
| 21/2" Nuts | 564 | 332 | ||||
| 23/4" Nuts | 738 | 429 | ||||
| 3" Nuts | 950 | 545 | ||||
| 31/4" Nuts | 1194 | 651 | ||||
| 31/2" Nuts | 1526 | 851 | ||||
| 33/4" Nuts | 1812 | 1005 | ||||
| 4" Nuts | 2180 | 1200 |
Recommended Nuts & Washers
| Grade 8 Bolting Grade | Nut Grade | Washer Grade |
|---|---|---|
| ASTM A194 Grade 8/8M/8C/8T | ASTM A194 Grade 8/8M/8C/8T | SS 304 |
| Grade 8 Stainless Steel 2 Way Lock Nuts | ASTM A194 grade 8 Custom Nuts |
| Stainless Steel GR.8 Nuts | ASTM A194 GR.8 heavy hex Nuts |
| Stainless Steel Grade 8 Hex Nuts | SS ASTM A194 Grade 8 Cap Nuts |
| Grade 8 nylon insert Nuts | ASTM A194 Grade 8 coupler Nuts |
| ASTM A194 T Nuts | Grade 8 Flex Lock Nuts |
| ASTM A194 Acorn Nuts | GR.8 Wing Nuts |
| ASTM A194 Grade 8 High Nuts | Grade 8 K Lock Nuts |
| ASTM A194 GR.8 Nylon Lock Nuts | ASTM A194 Slotted Nuts |
| ASTM A194 Grade 8 Custom Nuts | ASTM A194 Grade 8 Jam Nuts |
| ASTM A194 GR.8 Serrated Flange Nuts | ISO Certified Grade 8 Flange Lock Nuts |
| ASTM A194 Grade 8 lock Nuts | GR.8 self locking Nuts |