ASME SA194 Gr 8C Heavy Hex Nuts and washer manufacturer in India
ASTM A194 Grade 8C Nuts are made up of martensitic alloy stainless steels with sizes ranging from ¼ inches through 4 inches. The nominal sizes range from M6 through to M100 in metric scale. Viha Steel & Forging is a leading SA194 Gr. 8C Heavy Hex Nuts manufacturer and supplier. The heavy hex nuts are used in high strength and high torque applications where the use of tools enables maximum tightening of the fasteners.
The Gr 8C Washer and other fasteners are intended for high temperature services with high pressure services as well. The material is made up of the 347 grade steel. The composition has 17% chromium, 9% nickel with carbon, manganese, phosphorus, sulfur and silicon in the A194 Gr 8c Material. The fasteners are forged either hot or cold and machined from the 347 heat treated bar stocks. The bars are also quenched and tempered to increase the hardness up to 223 BHN. The ASTM A194 Grade 8c Nuts range up to 550MPa minimum tensile strength, the minimum yield strength is 240MPa.
The elongation rate of the fasteners is 30%. The fasteners are used in oil and gas, petroleum, petrochemical, power generation and other applications. The different types such as the ASTM A194 Grade 8C Washer are used to fasten components in heavy applications with high temperature and pressure conditions. As a leading supplier, we produce the fasteners in various types, shapes and sizes. Please feel free to contact us for more information on the different types such as the ASME SA 194 Gr 8C Nut and the prices.
Table Of Content
| Grade | Material | UNS Number |
C, % | Mn, % | Ph, % | S, % | Si, % | Cr, % | Ni, % | Mo, % | Ti, % | Cb & Ta, % | N, % | Other Elements, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8C | Type 347 | S34700 | 0.080 | 2.000 | 0.045 | 0.030 | 1.000 | 17.0-19.0 | 9.0-12.0 | - | 10 x Carbon Content, min | - | - |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | Elongation in 4D (El) | Reduction | Hardness – (BHN) |
| 550 | 240 | 30 | 40 | 223 |
Grade |
Material |
UNS Number |
|---|---|---|
8C |
Type 347 |
S34700 |
Standards |
Designation |
|---|---|
ASTM Grade 8C |
A194 Grade 8C: 347 Stainless Steel Heavy Hex Nuts. |
Melt Origin |
South America/East Europe/Japan/Korea/ |
|---|---|
Dimensions |
ASME B18.2.1, B18.3 |
Product Origin |
Made in India |
Certification |
Dual Certified As per ASTM & ASME Codes |
Threads Configuration |
ASME B1.1 2A/3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads |
Additional Certifications |
PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
Additional Requirements |
NACE MR0103 / MR0175 / ISO 15156 Compliance |
Mandatory Requirements |
Free from Mercury & Radioactive Contamination |
| Grade & Type | Brinell Hardness | Rockwell Hardness | |
|---|---|---|---|
| C Scale | B Scale | ||
| Grade 8C | 126-300 | 32 max | 60 min |
Suppliers of ASTM A194 Gr. 8c Material Nut, Don't spend extra for size of Grade 8c hex Nuts, we supply custom sizes
| Grade Type | Hot Forged or Cold Punched Nuts | Nuts Machined from Bar Stock |
|---|---|---|
| Grade 8C | 8C | 8CB |
ASTM A194 Grade 8C Nuts
ASME SA194 Gr 8C Heavy Hex Nuts
Gr 8C Washer 
A194 Gr 8c Hex Nuts
ASTM A194 Grade 8C Nuts |
Price |
ASTM DIN914 A194 Grade 8C hexagon nut with grade 4.8M 8M.8M |
US$ 0.01-US$ 2.00 / Piece |
Factory price astm a194 Grade 8C heavy hex nut |
US$ 0.20-US$ 20.00 / Piece |
astm a194 Grade 8C heavy double hex nut m8M4 |
US$ 0.98M1-US$ 1.44 / Kilogram |
Stockist of GR.8C Stainless Steel hex nut at distributor price
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 8CNuts 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. |
||||
| Size | Finished Hex | Heavy Hex | Finished Jam | Heavy Hex Jam | Square | Heavy Square |
| 1/2" | 3.75 | 6.54 | 2.62 | 4.00 | 5.78 | 7.87 |
| 5/8" | 7.33 | 11.9 | 4.93 | 6.96 | 10.8 | 14.3 |
| 3/4" | 11.9 | 19.3 | 7.70 | 11.0 | 15.4 | 23.5 |
| 7/8" | 19.0 | 29.7 | 12.0 | 16.7 | 24.5 | 36.2 |
| 1" | 28.3 | 42.5 | 17.6 | 23.5 | 36.3 | 51.5 |
| 11/8" | 40.3 | 59.2 | 24.7 | 32.4 | 52.5 | 72.4 |
| 11/4" | 54.3 | 78.6 | 36.1 | 45.8 | 70.6 | 95.5 |
| 13/8" | 73.0 | 102 | 47.9 | 59.3 | 94.5 | 125.0 |
| 11/2" | 94.3 | 131 | 60.9 | 74.8 | 122 | 161 |
| 15/8" | 162 | 91.6 | ||||
| 13/4" | 151 | 204 | 100 | 114 | ||
| 17/8" | 241 | 134 | ||||
| 2" | 224 | 299 | 140 | 165 | ||
| 21/4" | 419 | 227 | ||||
| 21/2" | 564 | 332 | ||||
| 23/4" | 738 | 429 | ||||
| 3" | 950 | 545 | ||||
| 31/4" | 1194 | 651 | ||||
| 31/2" | 1526 | 851 | ||||
| 33/4" | 1812 | 1005 | ||||
| 4" | 2180 | 1200 |
ASTM A194 Grade 8C Nylock Insert Nuts |
ASTM A194 Grade 8C Nuts |
A194 Coupling Nuts |
A194 Square Nuts |
ASTM A194 Grade 8C Flange Nuts |
A194 Grade 8C Hex Nuts |
SS Grade 8C Lock Nuts |
SS Grade 8C Heavy Hex Nuts |
Stainless Steel Grade 8C T Nuts |
A194 Grade 8C Dome Nuts |
ISO Approved ASTM A194 Eye Nuts |
ASTM A194 Grade 8C Nuts |
ASTM A 194 Hex Nuts |
A194 Grade 8C T But |
Stainless Steel Grade 8C Wing Nuts |
ASTM A194 Grade 8C Panel Nuts |
SA194 Nuts |
Stainless Steel Grade 8C Panel Nuts |
A194 Grade 8C Heavy Hex Nuts |
ASTM A194 Locking Nuts |
Grade 8C Stainless Steel Washer |
Grade 8C Acorn Nuts |
A194 Grade 8C Lock Nuts |
Grade 8C Panel Nuts |
We have a huge stock of A194 Gr 8c Material in specific size, Contact Viha Steel now
Take the reference of our quality and timely delivery from our clients in following cities
| Belgium, Dammam -KSA, , Indonesia, Philippines | A194 Grade 8C M16 Nuts |
| Thailand, Qatar, France, Europe | A194 Grade 8C Hex Nuts |
| Malaysia, Czechia, Germany, Thailand | A194 grade 8C Carbon Steel Heavy Hex Nuts |
| Finland, Malaysia, USA, Bangladesh | a194 grade 8c heavy double hex Nuts m64 |
| Brazil, South Africa, Saudi Arabia (KSA), Kuwait | A194 8C Xylan Heavy Hex Nuts |
| Singapore, Bahrain, South Africa | Black ASTM A194 grade 8C heavy duty hexagon Nuts |
| Nigeria, Philippines, Australia, UK | a194 gr 8C heavy hex Nuts black color high strength |
| UAE, Oman, Malaysia, Hong Kong | A194 grade 8C HEAVY HEX Nuts M10-M70 |
| Singapore, Chile, Italy, Iran | A194 Grade 8C Hot Dip Galvanized Heavy Hex Nuts |
| Malaysia, United Arab Emirates (UAE), Turkey, Norway | 5/8" Inch Zinc Plated/Black A194 grade 8C Heavy Hex Nuts |
| Dubai, Netherlands, Malaysia, Russia | Heavy Hex Nuts A194 Grade 8C Black Finish |
| UK, Egypt, Spain, Mexico | 3/8" 4/9" 5/7" 5/8'' 2'' A194 grade 8C Structural hex heavy Nuts |
| 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 |
**All measurements in millimeters**
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 |
SA194 Gr. 8C Heavy Hex Nuts available for online order, buy Gr 8C Nut at dealer price in India