ASTM A194 Gr 8M Nut
ASTM A194 Gr 8M Hex Nuts, ASME SA194 Gr 8M 12-Point Nuts, ASTM A194 8M T Nuts, Grade 8M Lug Nut, AISI Grade 8M Rivet Nuts.
The diameter of ASTM A194 Gr 8M Nuts can range from M02 to M160, and their length can be anywhere from 3 to 200 millimeters. fas10, one of the most reputable manufacturers in the business, carries a wide selection of ASTM A194 Gr 8M Hex Nuts in various forms. These fasteners are made with manganese, carbon, sulfur, silicon, nickel, chromium, phosphorus, and molybdenum, among other elements. There are many kinds of fasteners, such as AISI Grade 8M Rivet Nuts and other internally threaded fasteners.




About ASTM A194 Gr 8M Nut
Grade 8M Metric Nuts, AISI Grade 8M Captive Nuts, ASTM A194 Gr 8M Acorn Nuts, Gr 8M Nyloc Nuts, 8M Grade Sleeve Nuts.
These specifications cover the internally threaded nuts that we create specifically for use in situations that are susceptible to high pressure and high temperature. For A194 Grade 8M Heavy Hex Nuts, the hardness range to 223 Brinell Hardness Units. These fasteners are designed for applications that include high temperatures and high pressures, such as those found in the power generating industry, the oil and gas industry, applications involving heat exchangers, and applications involving boilers. If you have any concerns regarding the costs of Gr 8M Nyloc Nuts and other products, please do not hesitate to contact us.
ASTM A194 Gr 8M Nut Specification
Dimensions | ASME B18.2.1, B18.3 |
Melt Origin | Soutd America/East Europe/Japan/Korea/ |
Product Origin | Made in India |
Threads Configuration | ASME B1.1 2A/3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads |
Certification | Dual Certified As per ASTM & ASME Codes |
Additional Certifications | PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
Mandatory Requirements | Free from Mercury & Radioactive Contamination |
Additional Requirements | NACE MR0103 / MR0175 / ISO 15156 Compliance |
Chemical Composition ASTM A194 Gr 8M Nut
ASTM | C. | Mn. | Si. | P. | S. | Cr. | Ni. | Mo. |
A194 Grade 8M | 0.08M % | 2.00 % | 1.00 % | 0.05 %. | 0.03 % | 18.0-20.0 % | 8.0-11.0 | -- |
Mechanical Properties ASTM A194 Gr 8M Nut
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 |
Dimensions Of ASTM A194 Gr 8M Nut
ASTM A194 Gr. 8M Nut Dimensions :


Nominal Size inch | Basic Major Diameter of Thread | Width Across Flats, F | Width Across Corners, G | Thickness Heavy Hex Nuts, H | Thickness Heavy Hex Jam Nuts, H1 | Maximum Runout of Bearing Surface to Thread Axis, FIM | |||||||||
Heavy HEX NUTS | Heavy Hex Jam Nuts | ||||||||||||||
Specified Proof load | |||||||||||||||
Basic inch | Min. | Max | Min. | Max | Basic inch | Min. | Max | Basic inch | Min. | Max | Up to 150,000 psi | 150,000 psi and Greater | All Strength Levels | ||
1/4 | 0.2500 | 1/2 | 0.488 | 0.500 | 0.556 | 0.577 | 15/64 | 0.218 | 0.250 | 11/64 | 0.156 | 0.188 | 0.017 | 0.011 | 0.017 |
5/16 | 0.3125 | 9/16 | 0.546 | 0.562 | 0.622 | 0.650 | 19/64 | 0.280 | 0.314 | 13/64 | 0.186 | 0.220 | 0.020 | 0.012 | 0.020 |
3/8 | 0.3750 | 11/16 | 0.669 | 0.688 | 0.763 | 0.794 | 23/64 | 0.341 | 0.377 | 15/64 | 0.216 | 0.252 | 0.021 | 0.014 | 0.021 |
7/16 | 0.4375 | 3/4 | 0.728 | 0.750 | 0.830 | 0.866 | 27/64 | 0.403 | 0.441 | 17/64 | 0.247 | 0.285 | 0.022 | 0.015 | 0.022 |
1/2 | 0.5000 | 7/8 | 0.850 | 0.875 | 0.969 | 1.010 | 31/64 | 0.464 | 0.504 | 19/64 | 0.277 | 0.317 | 0.023 | 0.016 | 0.023 |
9/16 | 0.5625 | 15/16 | 0.909 | 0.938 | 1.037 | 1.083 | 35/64 | 0.526 | 0.568 | 21/64 | 0.307 | 0.349 | 0.024 | 0.017 | 0.024 |
5/8 | 0.6250 | 1 1/16 | 1.031 | 1.062 | 1.175 | 1.227 | 39/64 | 0.587 | 0.631 | 23/64 | 0.337 | 0.381 | 0.025 | 0.018 | 0.025 |
3/4 | 0.7500 | 1 1/4 | 1.212 | 1.250 | 1.382 | 1.443 | 47/64 | 0.710 | 0.758 | 27/64 | 0.398 | 0.446 | 0.027 | 0.020 | 0.027 |
7/8 | 0.8750 | 1 7/16 | 1.394 | 1.438 | 1.589 | 1.660 | 55/64 | 0.833 | 0.885 | 31/64 | 0.458 | 0.510 | 0.029 | 0.022 | 0.029 |
1 | 1.0000 | 1 5/8 | 1.575 | 1.625 | 1.796 | 1.876 | 63/64 | 0.956 | 1.012 | 35/64 | 0.519 | 0.575 | 0.031 | 0.024 | 0.031 |
1 1/8 | 1.1250 | 1 13/16 | 1.756 | 1.812 | 2.002 | 2.093 | 1 7/64 | 1.079 | 1.139 | 39/64 | 0.579 | 0.639 | 0.033 | 0.027 | 0.033 |
1 1/4 | 1.2500 | 2 | 1.938 | 2.000 | 2.209 | 2.309 | 1 7/32 | 1.187 | 1.251 | 23/32 | 0.687 | 0.751 | 0.035 | 0.030 | 0.035 |
1 3/8 | 1.3750 | 2 3/16 | 2.119 | 2.188 | 2.416 | 2.526 | 1 11/32 | 1.310 | 1.378 | 25/32 | 0.747 | 0.815 | 0.038 | 0.033 | 0.038 |
1 1/2 | 1.5000 | 2 3/8 | 2.300 | 2.375 | 2.622 | 2.742 | 1 15/32 | 1.433 | 1.505 | 27/32 | 0.808 | 0.880 | 0.041 | 0.036 | 0.041 |
1 5/8 | 1.6250 | 2 9/16 | 2.481 | 2.562 | 2.828 | 2.959 | 1 19/32 | 1.556 | 1.632 | 29/32 | 0.868 | 0.944 | 0.044 | 0.038 | 0.044 |
1 3/4 | 1.7500 | 2 3/4 | 2.662 | 2.750 | 3.035 | 3.175 | 1 23/32 | 1.679 | 1.759 | 31/32 | 0.929 | 1.009 | 0.048 | 0.041 | 0.048 |
1 7/8 | 1.8750 | 2 15/16 | 2.844 | 2.938 | 3.242 | 3.392 | 1 27/32 | 1.802 | 1.886 | 1 1/32 | 0.989 | 1.073 | 0.051 | 0.044 | 0.051 |
2 | 2.0000 | 3 1/8 | 3.025 | 3.125 | 3.449 | 3.608 | 1 31/32 | 1.925 | 2.013 | 1 3/32 | 1.050 | 1.138 | 0.055 | 0.047 | 0.055 |
2 1/4 | 2.2500 | 3 1/2 | 3.388 | 3.500 | 3.862 | 4.041 | 2 13/64 | 2.155 | 2.251 | 1 13/64 | 1.155 | 1.251 | 0.061 | 0.052 | 0.061 |
2 1/2 | 2.5000 | 3 7/8 | 3.750 | 3.875 | 4.275 | 4.474 | 2 29/64 | 2.401 | 2.505 | 1 29/64 | 1.401 | 1.505 | 0.068 | 0.058 | 0.068 |
2 3/4 | 2.7500 | 4 1/4 | 4.112 | 4.250 | 4.688 | 4.907 | 2 45/64 | 2.647 | 2.759 | 1 37/64 | 1.522 | 1.634 | 0.074 | 0.064 | 0.074 |
3 | 3.0000 | 4 5/8 | 4.475 | 4.625 | 5.102 | 5.340 | 2 61/64 | 2.893 | 3.013 | 1 45/64 | 1.643 | 1.763 | 0.081 | 0.070 | 0.081 |
3 1/4 | 3.2500 | 5 | 4.838 | 5.000 | 5.515 | 5.774 | 3 3/16 | 3.124 | 3.252 | 1 13/16 | 1.748 | 1.876 | 0.087 | 0.075 | 0.087 |
3 1/2 | 3.5000 | 5 3/8 | 5.200 | 5.375 | 5.928 | 6.207 | 3 7/16 | 3.370 | 3.506 | 1 15/16 | 1.870 | 2.006 | 0.094 | 0.081 | 0.094 |
3 3/4 | 3.7500 | 5 3/4 | 5.562 | 5.750 | 6.341 | 6.640 | 3 11/16 | 3.616 | 3.760 | 2 1/16 | 1.990 | 2.134 | 0.100 | 0.087 | 0.100 |
4 | 4.0000 | 6 1/8 | 5.925 | 6.125 | 6.755 | 7.073 | 3 15/16 | 3.862 | 4.014 | 2 3/16 | 2.112 | 2.264 | 0.107 | 0.093 | 0.107 |
Different Types Of ASTM A194 Gr 8M Nut
Different Types Of Nuts:


ASTM A194 Gr. 8M Hex Nuts


ASTM A194 Gr. 8M T Nuts


ASTM A194 Gr. 8M Metric Nuts


ASTM A194 Gr. 8M Rivet Nuts


ASTM A194 Gr. 8M Sleeve Nuts


ASTM A194 Gr. 8M 12-Point Nuts


ASTM A194 Gr. 8M Lug Nut


ASTM A194 Gr. 8M Captive Nuts


ASTM A194 Gr. 8M Dome Nuts


ASTM A194 Gr. 8M Acorn Nuts


ASTM A194 Gr. 8M Nyloc Nuts


ASTM A194 Gr. 8M Insert Nuts


ASTM A194 Gr. 8M Lock Nuts


ASTM A194 Gr. 8M Castle Nuts


ASTM A194 Gr. 8M Square Nuts
Application of ASTM A194 Gr 8M Nut
Testing of ASTM A194 Gr 8M Nut
Packing Of ASTM A194 Gr 8M Nut
Destination Of ASTM A194 Gr 8M Nut
- Presentation PDF
- Brochure DOC