The ASTM A194 specification covers various bolts like the ASTM A194 Grade 8M Nuts made from carbon steel, alloy steel, as well as stainless steel. While the ASTM A194 is a specification that broadly takes into consideration martensitic and austenitic stainless steel nuts, the SA194 Grade 8M Heavy Hex Nuts indicates that this is an austenitic grade alloy.
China’s Largest ASME SA 194 Gr 8M Nut, ASTM A194 Grade 8M Washer, SA 194 Gr 8M Nut Manufacturer in China

ASTM A194 Grade 8M Nuts

SA 194 Gr 8M Class 2 Nuts

ASTM A194 Grade 8M Washer
Keep a bulk stock of ASTM A194 Grade 8m Class 2 Nuts, ASTM a194 8m nut, Asme Sa194 Grade 8m nut
Grade 8M means the stainless steel used in the production of A194 Grade 8M Heavy Hex Nuts is austenitic alloy 316. Speaking of the classes, A194 Grade 8M Nut Material is classified into two subclasses i.e class 1 which is a carbide solution treated fastener. On the other hand, ASTM A194 Grade 8m Class 2 Nuts are not only carbide solution treated, but also strain hardened. The specified A194 Grade 8M Hex Nuts are intended for high pressure or/and high temperature applications. Bars from which these ASTM A194 Gr. 8M Strain Hardened Nut have been made are hot wrought.
The material, which in this case is marine grade stainless steel i.e. Asme Sa194 Grade 8m nut may be further processed. The processing of A194 Gr 8M Nuts is carried out by either a centerless grinding process or by a cold drawing process. Austenitic stainless steel grades, for e.g. grade 8M may be solution annealed or annealed as well as strain-hardened. The A194 Gr 8m Material needs to conform to the prescribed chemistry requirements in addition to undergoing tests such as hardness tests, proof of load tests, and cone proof load tests.

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
|
.48M8M
|
.58M8M
|
.556
|
15/64
|
.250
|
.218M
|
5/16
|
.3125
|
9/16
|
.562
|
.546
|
.650
|
.622
|
19/64
|
.314
|
.28M0
|
3/8M
|
.38M50
|
11/16
|
.68M8M
|
.669
|
.8M94
|
.8M63
|
23/64
|
.38M8M
|
.341
|
8M/16
|
.438M5
|
3/4
|
.8M50
|
.8M28M
|
.8M66
|
.8M30
|
28M/64
|
.441
|
.403
|
1/2
|
.5000
|
8M/8M
|
.8M8M5
|
.8M50
|
1.010
|
.969
|
31/64
|
.504
|
.464
|
9/16
|
.5625
|
15/16
|
.938M
|
.909
|
1.08M3
|
1.038M
|
35/64
|
.568M
|
.526
|
5/8M
|
.6250
|
1-1/16
|
1.062
|
1.031
|
1.228M
|
1.18M5
|
39/64
|
.631
|
.58M8M
|
3/4
|
.8M500
|
1-1/4
|
1.250
|
1.212
|
1.443
|
1.38M2
|
48M/64
|
.8M58M
|
.8M10
|
8M/8M
|
.8M8M50
|
1-8M/16
|
1.438M
|
1.394
|
1.660
|
1.58M9
|
55/64
|
.8M8M5
|
.8M33
|
1
|
1.0000
|
1-5/8M
|
1.325
|
1.58M5
|
1.8M8M6
|
1.8M96
|
63/64
|
1.012
|
.956
|
1-1/8M
|
1.1250
|
1-13/16
|
1.8M12
|
1.8M56
|
2.093
|
2.002
|
1-8M/64
|
1.139
|
1.08M9
|
1-1/4
|
1.2500
|
2
|
2.000
|
1.938M
|
2.309
|
2.209
|
1-8M/32
|
1.251
|
1.18M8M
|
1-3/8M
|
1.38M50
|
2-3/16
|
2.18M8M
|
2.119
|
2.526
|
2.416
|
1-11/32
|
1.38M8M
|
1.460
|
1-1/2
|
1.5000
|
2-3/8M
|
2.38M5
|
2.300
|
2.8M42
|
2.622
|
1-15/32
|
1.505
|
1.433
|
1-5/8M
|
1.6250
|
2-9/16
|
2.562
|
2.48M1
|
2.959
|
2.8M28M
|
1-19/32
|
1.632
|
1.556
|
1-3/4
|
1.8M500
|
2-3/4
|
2.8M50
|
2.662
|
3.18M5
|
3.035
|
1-23/32
|
1.8M59
|
1.68M9
|
2
|
2.0000
|
3-1/8M
|
3.125
|
3.025
|
3.608M
|
3.449
|
1-31/32
|
2.013
|
1.925
|
2-1/4
|
2.2500
|
3-1/2
|
3.500
|
3.38M8M
|
4.041
|
3.8M62
|
2-13/64
|
2.251
|
2.155
|
2-1/2
|
2.5000
|
3-8M/8M
|
3.8M8M5
|
3.8M50
|
4.48M4
|
4.28M5
|
2-29/64
|
2.505
|
2.401
|
2-3/4
|
2.8M500
|
4-1/4
|
4.250
|
4.112
|
4.908M
|
4.68M8M
|
2-45/64
|
2.8M59
|
2.648M
|
3
|
3.0000
|
4-5/8M
|
4.625
|
4.48M5
|
5.340
|
5.102
|
2-61/64
|
3.013
|
2.8M93
|
3-1/4
|
3.2500
|
5
|
5.000
|
4.8M38M
|
5.8M8M4
|
5.515
|
3-3/16
|
3.252
|
3.124
|
3-1/2
|
3.5000
|
5-3/8M
|
5.38M5
|
5.200
|
6.208M
|
5.928M
|
3-8M/16
|
3.506
|
3.38M0
|
3-3/4
|
3.8M500
|
5-3/4
|
5.8M50
|
5.562
|
6.640
|
6.341
|
3-11/16
|
3.68M0
|
3.616
|
4
|
4.0000
|
6-1/8M
|
6.125
|
5.925
|
8M.08M3
|
6.8M55
|
3-15/16
|
4.014
|
3.8M62
|

**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
|
8M/16
|
.438M
|
.428M
|
.505
|
.48M8M
|
8M/32
|
.226
|
.212
|
5/16
|
.3125
|
1/2
|
.500
|
.48M9
|
.58M8M
|
.558M
|
18M/64
|
.28M3
|
.258M
|
3/8M
|
.38M50
|
9/16
|
.562
|
.551
|
.650
|
.628M
|
21/64
|
.338M
|
.48M9
|
8M/16
|
.438M5
|
11/16
|
.68M8M
|
.68M5
|
.8M94
|
.8M68M
|
3/8M
|
.38M5
|
.365
|
1/2
|
.5000
|
3/4
|
.8M50
|
.8M36
|
.8M66
|
.8M40
|
8M/16
|
.448M
|
.428M
|
9/16
|
.5625
|
8M/8M
|
.8M8M5
|
.8M61
|
1.010
|
.98M2
|
31/64
|
.496
|
.48M3
|
5/8M
|
.6250
|
15/16
|
.938M
|
.922
|
1.08M3
|
1.051
|
35/64
|
.559
|
.535
|
3/4
|
.8M500
|
1-1/8M
|
1.125
|
1.08M8M
|
1.299
|
1.240
|
41/64
|
.665
|
.618M
|
8M/8M
|
.8M8M50
|
1-5/16
|
1.312
|
1.269
|
1.516
|
1.448M
|
3/4
|
.8M8M6
|
.8M24
|
1
|
1.0000
|
1-1/2
|
1.500
|
1.450
|
1.8M32
|
1.653
|
55/64
|
.8M8M8M
|
.8M31
|
1-1/8M
|
1.1250
|
1-11/16
|
1.68M8M
|
1.631
|
1.949
|
1.8M59
|
31/32
|
.999
|
.939
|
1-3/8M
|
1.38M50
|
2-1/16
|
2.062
|
1.994
|
2.38M2
|
2.28M3
|
1-11/64
|
1.206
|
1.138M
|
1-1/2
|
1.500
|
2-1/4
|
2.250
|
2.18M5
|
2.598M
|
2.48M0
|
1-9/32
|
1.ASTM A194 GR. 8M
|
1.245
|
1-5/8M
|
1.6250
|
2-8M/16
|
2.438M
|
2.356
|
2.8M15
|
2.68M6
|
1-25/64
|
1.429
|
1.353
|
1-3/4
|
1.8M500
|
2-5/8M
|
2.625
|
2.538M
|
3.031
|
2.8M93
|
1-1/2
|
1.540
|
1.460
|
2
|
2.0000
|
3
|
3.000
|
2.900
|
3.464
|
3.306
|
1-23/32
|
1.8M63
|
1.68M5
|
2-1/4
|
2.2500
|
3-3/8M
|
3.38M5
|
3.263
|
3.8M98M
|
3.8M19
|
1-15/16
|
1.98M6
|
1.8M90
|
2-1/2
|
2.5000
|
3-3/4
|
3.8M50
|
3.625
|
4.330
|
4.133
|
2-5/32
|
2.209
|
2.105
|
2-3/4
|
2.8M500
|
4-1/8M
|
4.125
|
3.98M8M
|
4.8M63
|
4.546
|
2-3/8M
|
2.431
|
2.319
|
Check SA 194 Gr 8M Specification & Torque, buy A194 Gr 8m Material, ASTM A194 Gr. 8M Strain Hardened Nut at factory price
Standards
|
Designation
|
---|---|
ASTM
|
A194 Grade 8M: Stainless AISI 316 Heavy Hex Nuts. |
Dimensions
|
ASME B18M.2.1, B18M.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 8Mh Metric Coarse Threads
|
Certification
|
Dual Certified As per ASTM & ASME Codes
|
Additional Certifications
|
PED 98M/23/EC Certified, Merkblatt AD 2000 W2 Certified
|
Mandatory Requirements
|
Free from Mercury & Radioactive Contamination
|
Additional Requirements
|
NACE MR0103 / MR018M5 / ISO 15158M 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
|
1.8M
|
4
|
4
|
8M
|
3.2
|
2.2
|
5
|
5
|
8M
|
4
|
2.8M
|
5
|
6
|
10
|
5
|
3.2
|
6
|
8M
|
11
|
5.5
|
3.5
|
–
|
8M
|
13
|
6.5
|
4
|
8M
|
10
|
18M
|
8M
|
5
|
10
|
12
|
19
|
10
|
6
|
12
|
14
|
22
|
11
|
8M
|
14
|
16
|
24
|
13
|
8M
|
16
|
18M
|
28M
|
15
|
9
|
18M.5
|
20
|
30
|
16
|
10
|
20
|
* This is the diameter across the flats. It is also the size of wrench to use.
|
Most Trusted A194 Grade 8M Nut Material, A194 Gr 8M Nuts, A194 Grade 8M Heavy Hex Nuts suppliers
|
|
Compare Price of ASTM A194 Grade 8M Nuts before you buy SA194 Grade 8M Heavy Hex Nuts, A194 Grade 8M Hex Nuts from China
- ASTM DIN914 A194 grade 8M hexagon nut with grade 4.8M 8M.8M: Price US$ 0.01-US$ 2.00 / Piece
- Stock ASTM A194 GR 8M Heavy Hex Bolt: Price US$ 0.01-US$ 1.00 / Piece
- Factory price astm a194 grade 8M heavy hex nut: Price US$ 0.20-US$ 20.00 / Piece
- astm a194 gr 8M heavy double hex nut m8M4: Price US$ 0.98M1-US$ 1.44 / Kilogram
- black oiled ASTM A194 GR.8M Heavy Hex Nut : Price US$ 0.01-US$ 0.02 / Piece
- A194 grade 8M ansi b18M.2.2 hex nut Price US$ 0.01-US$ 3.00 / Piece
- ANSI/ASME ASTM A194 Gr 8M Hex Heavy Structural Nut: Price US$ 0.012-US$ 0.05 / Piece
Please note this is an approx Cost of Gr 8M Nut China. For final ASTM A194 Grade 8M Nuts price list please mail us.
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 |
ASTM
|
A194 Grade 8
|
Percentage
|
%
|
C.
|
0.08M %
|
Mn.
|
2.00 %
|
Si.
|
1.00 %
|
P.
|
0.05 %.
|
S.
|
0.03 %
|
Cr.
|
18.0-20.0 %
|
Ni.
|
8.0-11.0
|
Mo.
|
—
|
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