ASTM A194 Grade 7 implies that the materials used to make these fasteners have been Quenched and Tempered. Generally, the steel grades used to produce the ASTM A194 Gr 7 Heavy Hex Nuts include the following alloys AISI 4140/ 4142/ 4145/ 4140H /4142H /4145H/ grade 410.
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Astm A194 Grade 7 Nuts
Sa 194 Gr 7 Heavy Hex Nuts
ASTM A194 Grade 7 Washer
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The aforementioned alloy grades contain a high content of chromium, which is why the SA194 Grade 7 Flat Washer is resistant to oxidation corrosion. For instance, grade 410 A194 Grade 7 Material is a basic martensitic stainless steel grade. These martensitic stainless steel nuts ASTM A194 Gr 7 Nuts contains about 11.5% chromium. Therefore, the astm a194 grade 7l nuts exhibit both exceptional resistance to wear as well as corrosion resistance properties.
The SA 194 Grade 7 Nuts designed according to this specification are intended to be used for high pressure and/or high temperature applications. Hence, grade 410 ASTM A194 Grade 7 Nuts are used in applications involving industries where they are exposed to corrosive media such as chemicals, food, mild acids, water, and air. Stainless steel bars from which the ASME SA 194 Gr 7 Hex Nut has been produced is to be hot-wrought. Moreover, the alloy of the fasteners needs to be further processed by either undergoing processes like centerless grinding or by cold drawing.
Each of the following alloys AISI 4140/ 4142/ 4145/ 4140H /4142H /4145H/ grade 410 is to conform to the chemical composition requirements that are prescribed by the specification. Tests such as hardness tests, proof of load tests, as well as the cone proof load tests are to be administered to all nuts and ASTM A194 Grade 7 Washer in order to meet the requirements of the specification
| Nominal Size, In. | Temperature °F | Proof Load Stress, ksi | Hardness Rockwell | Material |
| 1/4 – 4 | 1100 | 80 | C38 | Medium Carbon Alloy Steel, Quenched and Tempered |
|
ASTM
|
A194 Grade 7
|
|
Percentage
|
%
|
|
C.
|
0.37-0.49%
|
|
Mn.
|
0.65-1.10%
|
|
Si.
|
0.15-0.35%
|
|
P.
|
0.035%.
|
|
S.
|
0.04%
|
|
Cr.
|
0.75-1.2%
|
|
Ni.
|
—
|
|
Mo.
|
0.15-0.25
|
Most Reliable ASTM a194 grade 7l nuts, A194 Grade 7 Material Suppliers
|
Standards
|
Designation
|
|---|---|
|
ASTM
|
A194 Grade 7: 410 Stainless Steel, Quenched and Tempered.
|
|
Dimensions
|
ASME B18.2.1, B18.3
|
|---|---|
|
Melt Origin
|
East Europe/South America/Korea/Japan
|
|
Product Origin
|
Made in China
|
|
Threads Configuration
|
ASME B1.1 2A/3A Inch Unified Threads and B1.13M 7h 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 15157 Compliance
|
|
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.
|
||||
|
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
|
**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
|
Compare Price of ASTM A194 Grade 7 Nuts before you buy ASTM A194 Gr 7 Nuts from China
- ASTM DIN914 A194 grade 7 hexagon nut with grade 4.8 8.8: Price US$ 0.01-US$ 2.00 / Piece
- Stock ASTM A194 GR 7 Heavy Hex Bolt: Price US$ 0.01-US$ 1.00 / Piece
- Factory price astm a194 grade 7 heavy hex nut: Price US$ 0.20-US$ 20.00 / Piece
- astm a194 gr 7 heavy double hex nut m74: Price US$ 0.971-US$ 1.44 / Kilogram
- black oiled ASTM A194 GR.7 Heavy Hex Nut : Price US$ 0.01-US$ 0.02 / Piece
- A194 grade 7 ansi b18.2.2 hex nut Price US$ 0.01-US$ 3.00 / Piece
- ANSI/ASME ASTM A194 Gr 7 Hex Heavy Structural Nut: Price US$ 0.012-US$ 0.05 / Piece
Please note this is an approx Cost of Gr 7 Nut China. For final ASTM A194 Grade 7 Nuts price list please mail us.
Make an inquiry to buy SA194 Grade 7 Flat Washer and get a live quote
|
|
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