ASTM A194 Grade 8T Specification
ASTM A194 Grades
The ASTM A194 specification is very broad in the range of heavy hex nuts specified in carbon, alloy, and stainless steel to be used in heavy pressurized and high-temperature applications. In the past, ASTM A194 Grade 8T nuts were not a standard designation under this specification (at least in early 2022) and therefore, one must consult the latest version of the standard to get accurate information or any recent developments on the classification of Grade 8T.
No matter what classification status it has, ASTM A194 GR. 8T nuts are accepted as an industrial-grade steel fastener that is in compliance with mechanical properties and chemical composition as outlined in ASTM International. These fasteners are of very high tensile strength and are therefore applicable in the strong connections in many structural and other assembly works. They can be used in a wide range of industries, such as automotive, construction, electrical, and plumbing, and are typically used to hold objects in place or to assemble metal and plastic pipes or tubes.
ASTM A194 Gr. 8T Hex Nuts, ASTM A194 Gr. 8T Nylock Nuts, ASTM A194 Gr. 8T Flex lock Nuts, ASTM A194 Gr. 8T Hex Nuts, ASTM A194 Gr. 8T Square Nut, ASTM A194 Gr. 8T Self Locking Nut and ASTM A194 8t Nuts Supplier in Mumbai, India
Jade Alloys is a leading ASME SA194 Grade 8T nuts manufacturer in India, specializing in providing high-quality ASME SA194 Gr 8T heavy hex nuts. Stainless steel Grade 321 is also used to manufacture these nuts, and this is specifically related to offering high mechanical strength with excellent corrosion resistance to be used in high-pressure and high-temperature environments.
We offer detailed information about the ASTM A194 Grade 8T nut dimensions, ASTM A194 Grade 8T nuts size, competitive ASTM A194 Grade 8T nuts price estimates and information regarding ASTM A194 Grade 8T nuts equivalent standards that would meet all your project requirements.
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Quick Section Links
- ASTM A194 Gr 8 Nut Specifications
- ASTM A194 Grade 8T Nuts Chemical Composition
- ASTM A194 Grade 8T Nuts Equivalent Grades
- Mechanical Properties of ASTM A194 Grade 8T Nuts
- ASTM A194 Grade 8 Nuts Proof Load (Inch Series)
- ASTM A194 Grade 8 Nuts Proof Load (Metric)
- ASTM A194 Grade 8 Nuts Proof Load Testing of Strain Hardened Nuts (Inch)
- ASTM A194 Grade 8 Nuts Proof Load Testing of Strain Hardened Nuts (Metric)
- ASTM A194 Grade 8T Nut Dimensions
- ASTM A194 Grade 8T Nuts Size Chart
- ASTM A194 GR. 8T Nuts Inventory
- Available Stock of ASME SA 194 Gr 8 Nuts
- Applications of ASTM A194 8T Nuts
- ASTM A194 Grade 8T Nuts Price
ASTM A194 Gr 8 Nut Specifications
| Grade | ASTM A194 Grade 8T |
| Standards | DIN, ISO, JIS, GB, IS, BS, ASTM |
| Dimension | ASME B18.2.1, B18.3 |
| Size | M02 to M160 |
| Types | Hexagon Nuts, Self Locking Nut, Square Nuts, Hexagon Coupling Nuts, Hexagon Castle Nuts, Hexagon Domed Cap Nuts, Hexagon Thin Nuts, Hexagon Thin Nuts etc. |
ASTM A194 Grade 8t Nuts Chemical Composition
| Grade | Description and UNS Designation |
C | Mn | P | SE | Si | Cr | Ni | Mo | Ti | CbH | N | Cu | Se | V | Al |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ASTM A194/A194M Grade 8T | (321) S32100 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | . . . | 5 x (C+N) min – 0.70 max | . . . | 0.10 | . . . | . . . | . . . | . . . |
ASTM A194 Grade 8T Nuts Equivalent Grades
| Standard | UNS (American) | JIS (Japan) | AFNOR (France) | WNR (European) | BS (England) | Sweden (SS) | DIN (Germany) | UNI (Italy) | Poland (PN) | SFS (Finland) | ÖNORM (Austria) | GOST (Russia) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Equivalent Grade | UNS S32100 | SUS 321 | Z6CNT18-10 | 1.4541 | 321S31 | 2337 | X10CrNiTi18-9 | X6CrNiTi18-11 | 0H18N10T / 1H18N9T | 731 | X6CrNiTi18-10S | 08KH18N10T |
Mechanical Properties of ASTM A194 Grade 8t Nuts
| Grade and Type | Completed Nuts | Sample Nut after Treatment | |||
|---|---|---|---|---|---|
| Brinell Hardness | Rockwell Hardness | Brinell Hardness, min | Rockwell Hardness B Scale, min | ||
| C Scale | B Scale | ||||
| ASTM A194/A194M Grade 8T | 126 to 300 | 32 max | 60 min | … | … |
ASTM A194 Grade 8 Nuts Proof Load (Inch Series)
| Nominal Size, in. | Threads per Inch | Stress Area in. 2 | Proof Load, lbf A | |
|---|---|---|---|---|
| All Types of Grade 8 | ||||
| Heavy HexH | HexI | |||
| 1/4 | 20 | 0.0316 | 2 540 | 2 380 |
| 5/16 | 18 | 0.0524 | 4 190 | 3 930 |
| 3/8 | 16 | 0.0774 | 6 200 | 5 810 |
| 7/16 | 14 | 0.1063 | 8 500 | 7 970 |
| 1/2 | 13 | 0.1419 | 11 350 | 10 640 |
| 9/16 | 12 | 0.182 | 14 560 | 13 650 |
| 5/8 | 11 | 0.226 | 18 080 | 16 950 |
| 3/4 | 10 | 0.334 | 26 720 | 25 050 |
| 7/8 | 9 | 0.462 | 36 960 | 34 650 |
| 1 | 8 | 0.606 | 48 480 | 45 450 |
| 11/8 | 8 | 0.790 | 63 200 | 59 250 |
| 11/4 | 8 | 1.000 | 80 000 | 75 000 |
| 13/8 | 8 | 1.233 | 98 640 | 92 450 |
| 11/2 | 8 | 1.492 | 119 360 | 111 900 |
ASTM A194 Grade 8 Nuts Proof Load (Metric)
| Nominal Size, mm | Threads Pitch | Stress Area mm 2 | Proof Load, kNA | |
|---|---|---|---|---|
| All Types of Grade 8 | ||||
| Heavy HexH | HexI | |||
| M6 | 1.0 | 20.1 | 11.1 | 10.4 |
| M8 | 1.25 | 36.6 | 20.1 | 18.8 |
| M10 | 1.50 | 58.0 | 31.9 | 29.9 |
| M12 | 1.75 | 84.3 | 46.4 | 43.4 |
| M14 | 2.0 | 115.0 | 63.3 | 59.2 |
| M16 | 2.0 | 157.0 | 86.4 | 80.9 |
| M20 | 2.5 | 245.0 | 134.8 | 126.2 |
| M22 | 2.5 | 303.0 | 166.7 | 156.0 |
| M24 | 3.0 | 353.0 | 194.2 | 181.8 |
| M27 | 3.0 | 459.0 | 252.5 | 236.4 |
| M30 | 3.5 | 561.0 | 308.6 | 288.9 |
| M36 | 4.0 | 817.0 | 449.4 | 420.8 |
ASTM A194 Grade 8 Nuts Proof Load Testing of Strain Hardened Nuts (Inch)
| Proof Load, kNA | ||||
|---|---|---|---|---|
| NominalSize, mm | ThreadPitch | Stress Area,mm2 | All Typesof Grade 8(strain hardened) | All Typesof Grade 8(strain hardened) |
| Heavy HexC | HexB | |||
| 1/4 | 20 | 0.0316 | 3 950 | 3 480 |
| 5/16 | 18 | 0.0523 | 6 550 | 5 760 |
| 3/8 | 16 | 0.0774 | 9 675 | 8 510 |
| 7/16 | 14 | 0.1063 | 13 290 | 11 690 |
| 1/2 | 13 | 0.1419 | 17 740 | 15 610 |
| 9/16 | 12 | 0.182 | 22 750 | 20 020 |
| 5/8 | 11 | 0.226 | 28 250 | 24 860 |
| 3/4 | 10 | 0.334 | 41 750 | 36 740 |
| 7/8 | 9 | 0.462 | 53 130 | 46 200 |
| 1 | 8 | 0.606 | 69 690 | 60 600 |
| 11/8 | 8 | 0.790 | 82 950 | 75 050 |
| 11/4 | 8 | 1.000 | 105 000 | 95 000 |
| 13/8 | 8 | 1.233 | 123 300 | 110 970 |
| 11/2 | 8 | 1.492 | 149 200 | 134 280 |
ASTM A194 Grade 8 Nuts Proof Load Testing of Strain Hardened Nuts (Metric)
| Proof Load, kNA | ||||
|---|---|---|---|---|
| Nominal Size, mm | Thread Pitch | Stress Area,mm2 | All Types of Grade 8(strain hardened) | All Types of Grade 8(strain hardened) |
| Heavy HexC | HexB | |||
| M6 | 1.0 | 20.1 | 17.3 | 15.3 |
| M8 | 1.25 | 36.6 | 31.3 | 27.8 |
| M10 | 1.50 | 58.0 | 49.9 | 44.1 |
| M12 | 1.75 | 84.3 | 72.5 | 64.1 |
| M14 | 2.0 | 115.0 | 98.9 | 87.4 |
| M16 | 2.0 | 157.0 | 135.0 | 119.3 |
| M20 | 2.5 | 245.0 | 210.9 | 186.2 |
| M22 | 2.5 | 303.0 | 240.9 | 209.0 |
| M24 | 3.0 | 353.0 | 280.6 | 243.5 |
| M27 | 3.0 | 459.0 | 332.7 | 300.6 |
| M30 | 3.5 | 561.0 | 406.7 | 367.5 |
| M36 | 4.0 | 817.0 | 563.7 | 506.5 |
ASTM A194 Grade 8t Nut Dimensions
|
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
|
ASTM A194 Grade 8t Nuts Size Chart
|
Nut 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. |
||||
“Contact Jade Special Metals today with your requirement for ASTM A194 GR. 8T Nuts. We assure you of the best quote.
ASTM A194 GR. 8T Nuts Inventory
ASTM A194 GR. 8T Hex Nuts
ASTM A194 GR. 8T Lock Nuts
ASTM A194 GR. 8T Wing Nuts
Available Stock of ASME SA 194 Gr 8 Nuts
- ASTM A194 GR. 8T Panel Nut
- ASTM A194 8T Dome Nuts
- ASTM A194 GR. 8T Serrated Flange Nut
- ASTM A194 GR. 8T Hex Nut
- ASTM A194 GR. 8T Nut
- ASTM A194 8T Serrated Flange Nuts
- ASTM A194 GR. 8T Wing Nut
- ASTM A194 GR. 8T Self Locking Nuts
- ASTM A194 GR. 8T | ASME B18T.2.1 High Nuts
- ASTM A194 GR. 8T Spring T Nuts
- ASTM A194 GR. 8T Hexagone Nuts
- ASME B18T.2.1 ASTM A194 8T Nuts
- ASTM A194 GR. 8T Hex Nuts
- ASTM A194 8T Slotted Nut
- ASME SA194 Gr. 8T B18T.3 Nylon Insert Nut
- ASTM A194 GR. 8T Structural Nuts
- ASTM A194 GR. 8T Flex Lock Nut
- ASTM A194 GR. 8T 2 Way Lock Nuts
- ASTM A194 GR. 8T Square Nuts
- ASTM A194 8T Coupler Nuts
- ASTM A194 GR. 8T Hexagon Nuts
- ASTM A194 GR. 8T Heavy Hex Nuts
- ASTM A194 8T Hex Nuts
- ASTM A194 GR. 8T 2 Way Lock Nut
Applications of ASTM A194 GR. 8T Nuts
- Pipeline Engineering
- Marine Industry
- Chemical Industry
- Oil & gas industry
- Mechanical Engineering
- Plant Engineering
- Petrochemical Industry
- Power Industry
- Aerospace
- Food Processing Industry
ASTM A194 Grade 8T Nuts Price
| Product | Price |
| ASTM A194 Grade 8T Socket Head Cap Screw | $5.59–$258.50 |
| ASTM A194 Grade 8T Plow Bolt, Plain, 5/8-11×2, Gr 5, PK25 | $30.65 / pkg. of 25 |
| ASTM A194 Grade 8T Structural Bolt, 1/2-13×1 1/2L, PK25 | $13.21 / pkg. of 25 |
| ASTM A194 Grade 8T U-Bolts, with 5/16 Thread, Zinc Finish | $3.71–$7.25 |
| ASTM A194 Grade 8T Hex Nut, SS, Gr SS304, 3/8-16, Plain, PK50 | $12.13 / pkg. of 50 |
| ASTM A194 Grade 8T Hex Lag Screw, 3/8×2 1/2 In L, PK50 | $19.79 / pkg. of 50 |
| ASTM A194 Grade 8T Flat Washer | $0.09–$5.97 |
We maintain ready stock of Stainless Steel ASTM A194 GR. 8T Self Locking Nut, ASTM A194 GR. 8T Heavy Hex Nuts, ASTM A194 GR. 8T Self Locking Nut, ASTM A194 GR. 8T Lock Nuts, ASTM A194 GR. 8T Hex Nuts. Get in touch with us with your requirement for quick quote.
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