Bolts and threaded studs that conform to ASTM A193 B8m Class 1 specifications are made from stainless steel of the AISI 304 grade. Grade 304 requirements The most popular and commonly used stainless steel grade in the fastener business is Sa193 B8 Class 2. The ASTM A193 Grade B8 Class 2 Bolts have a minimum tensile strength of 100 Ksi and a maximum tensile strength of 125 Ksi.
Table of Content
Due to the austenitic nature of the alloy, ASTM A193 B8m Class 2 Bolts have a high tensile strength as well as good corrosion characteristics. Class 1 defined in A193 B8 This grade of austenitic stainless steel allows for the carbide solution treatment of fasteners. Fasteners like ASTM A193 Gr B8m Studs or stainless steel bars are treated first by heating, then water quenching, in a process known as carbide solution treatment, also known as solution annealing. As a result, the Sa193 B8 Cl.1 acquires the greatest amount of corrosion resistance.
Strain hardening is done to ASTM A193 B8m Nut after it has been exposed to a carbide solution. The A193-B8 Cl.2 is given this solution treatment, which enables them to develop stronger characteristics. Galling is also less likely to occur when A193 B8 Cl1 is treated with a carbide solution.
Dimensions
|
ASME B18.2.1, B18.3
|
---|---|
Melt Origin
|
South America/East Europe/JapanKorea/
|
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
|
Related A193 B8 Cl. 2 Bolts Specifications
Standards
|
Designation
|
---|---|
ASTM
|
A193 B8 Class 2: Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened
|
ASTM A193 B8 Class 2 Fasteners
|
Price
|
A193 B8 Class 2 B8 Class 2M(A) Stainless Steel ANSI Hex Heavy Bolt
|
US$ 0.001-US$ 0.05 / Piece
|
Stainless Steel ASTM A193 B8 Class 2 Hex Bolt
|
US$ 0.005-US$ 0.10 / Piece
|
ASTM A193 stainless steel SS316 B8 Class 2 B8 Class 2m stud bolt
|
US$ 500.00-US$ 900.00 / Ton
|
a193 B8 Class 2 a194 8 stud anti-theft bolt and nut price list
|
US$ 0.971-US$ 1.44 / Kilogram
|
ASTM A193 Gr B8 Class 2 / B8 Class 2A Hex Heavy Structural Bolt
|
US$ 0.012-US$ 0.05 / Piece
|
ASTM a193 B8 Class 2/B8 Class 2M hex bolt
|
US$ 0.01-US$ 0.10 / Piece
|
Standard size a193 B8 Class 2 a194 8 stud bolt and nut
|
US$ 0.01 / Piece
|
stainless steel B8 Class 2 B8 Class 2m stud bolt astm a193
|
US$ 0.003-US$ 0.20 / Piece
|
**All measurements in millimeters**
NOMINAL SIZE (D)
|
BODY DIAMETER
|
HEAD THICKNEASTM A193
|
ACROASTM A193 THE FLATS
|
ACROASTM A193 CORNERS
|
||||
---|---|---|---|---|---|---|---|---|
D (MAX)
|
D (MIN)
|
H (MAX)
|
H (MIN)
|
F (MAX)
|
F (MIN)
|
C (MAX)
|
C (MIN)
|
|
m10
|
10.00
|
9.78
|
6.63
|
6.17
|
17.00
|
15.73
|
18.48
|
17.77
|
m12
|
12.00
|
11.73
|
7.76
|
4.24
|
19.00
|
17.73
|
20.78
|
20.03
|
m14
|
14.00
|
13.73
|
9.09
|
8.51
|
22.00
|
20.67
|
24.25
|
23.35
|
m16
|
16.00
|
15.73
|
10.32
|
9.68
|
24.00
|
23.67
|
27.71
|
26.75
|
m20
|
20.00
|
19.67
|
12.88
|
12.12
|
30.00
|
29.16
|
34.64
|
32.95
|
m24
|
24.00
|
23.67
|
15.44
|
14.56
|
36.00
|
35.00
|
41.57
|
39.55
|
m30
|
30.00
|
29.67
|
19.48
|
17.92
|
46.00
|
45.00
|
53.12
|
50.85
|
m36
|
36.00
|
35.61
|
23.38
|
21.63
|
55.00
|
53.80
|
63.51
|
60.79
|
m42
|
42.00
|
41.38
|
26.97
|
25.03
|
65.00
|
62.90
|
75.06
|
71.71
|
m48
|
48.00
|
47.38
|
31.07
|
28.93
|
75.00
|
72.60
|
86.60
|
82.76
|
m56
|
56.00
|
55.26
|
36.2
|
33.80
|
85.00
|
82.20
|
98.15
|
93.71
|
m64
|
64.00
|
63.26
|
41.32
|
38.68
|
95.00
|
91.80
|
109.70
|
104.65
|
m72
|
72.00
|
71.26
|
46.45
|
43.55
|
105.00
|
101.40
|
121.24
|
115.60
|
m80
|
80.00
|
79.26
|
51.58
|
48.42
|
115.00
|
111.00
|
132.72
|
126.54
|
m90
|
90.00
|
89.13
|
57.74
|
54.26
|
130.00
|
125.50
|
150.11
|
143.07
|
m100
|
90.00
|
99.13
|
63.9
|
60.10
|
145.00
|
140.00
|
167.43
|
159.60
|
Diameter (D)
|
Body Diameter (D)
|
Across the Flats (F)
|
Across the Corners ©
|
Head Height (H)
|
Thread Lengths (T)
|
|||||
---|---|---|---|---|---|---|---|---|---|---|
MAX
|
MIN
|
MAX
|
MIN
|
MAX
|
MIN
|
MAX
|
MIN
|
< 6”
|
> 6”
|
|
1/2
|
0.515
|
0.482
|
0.875
|
0.85
|
1.01
|
0.969
|
0.364
|
0.302
|
1.25
|
1.5
|
5/8
|
0.642
|
0.605
|
1.062
|
1.031
|
1.227
|
1.175
|
0.444
|
0.378
|
1.5
|
1.75
|
3/4
|
0.768
|
0.729
|
1.25
|
1.212
|
1.443
|
1.383
|
0.524
|
0.455
|
1.75
|
2
|
7/8
|
0.895
|
0.852
|
1.438
|
1.394
|
1.66
|
1.589
|
0.604
|
0.531
|
2
|
2.25
|
1
|
1.022
|
0.976
|
1.625
|
1.575
|
1.876
|
1.796
|
0.7
|
0.591
|
2.25
|
2.5
|
1 1/8
|
1.149
|
1.098
|
1.812
|
1.756
|
2.093
|
2.002
|
0.78
|
0.658
|
2.5
|
2.75
|
1 1/4
|
1.277
|
1.223
|
2
|
1.938
|
2.309
|
2.209
|
0.876
|
0.749
|
2.75
|
3
|
1 3/8
|
1.404
|
1.345
|
2.188
|
2.119
|
2.526
|
2.416
|
0.94
|
0.81
|
3
|
3.25
|
1 1/2
|
1.531
|
1.47
|
2.375
|
2.3
|
2.742
|
2.622
|
1.036
|
0.902
|
3.25
|
3.5
|
1 3/4
|
1.785
|
1.716
|
2.75
|
2.662
|
3.175
|
3.035
|
1.196
|
1.054
|
3.75
|
4
|
2
|
2.039
|
1.964
|
3.125
|
3.025
|
3.608
|
3.449
|
1.388
|
1.175
|
4.25
|
4.5
|
2 1/4
|
2.305
|
2.214
|
3.5
|
3.388
|
4.041
|
3.862
|
1.548
|
1.327
|
4.75
|
5
|
2 1/2
|
2.559
|
2.461
|
3.875
|
3.75
|
4.474
|
4.275
|
1.708
|
1.479
|
5.25
|
5.5
|
2 3/4
|
2.827
|
2.711
|
4.25
|
4.112
|
4.907
|
4.688
|
1.869
|
1.632
|
5.75
|
6
|
3
|
3.081
|
2.961
|
4.625
|
4.475
|
5.34
|
5.102
|
2.06
|
1.815
|
6.25
|
6.
|
TORQUE FT-LBS - ASTM A193 GRADE B8 Class 2 STUD BOLTS
|
|||
BOLT
DIA |
TORQUE FT-LBS
|
||
30% Initial
Torque |
70%
Torque |
100% Final
Torque |
|
1/2
|
16
|
36
|
52
|
9/16
|
23
|
53
|
75
|
5/8
|
31
|
73
|
104
|
3/4
|
55
|
129
|
184
|
7/8
|
71
|
166
|
237
|
1
|
107
|
249
|
356
|
1⅛
|
127
|
297
|
424
|
1¼
|
179
|
417
|
596
|
1⅜
|
186
|
435
|
622
|
1½
|
246
|
574
|
821
|
19/16
|
168
|
392
|
560
|
1⅝
|
191
|
445
|
636
|
1¾
|
240
|
561
|
801
|
1⅞
|
298
|
696
|
994
|
2
|
366
|
853
|
1219
|
2¼
|
529
|
1234
|
1762
|
2½
|
733
|
1709
|
2442
|
2¾
|
986
|
2300
|
3285
|
3
|
1289
|
3008
|
4297
|
TORQUE NM - ASTM A193 GRADE B8 Class 2 STUD BOLTS
|
|||
BOLT
DIA |
TORQUE NM
|
||
30% Initial
Torque |
70%
Torque |
100% Final
Torque |
|
1/2
|
22
|
49
|
71
|
9/16
|
31
|
72
|
102
|
5/8
|
42
|
99
|
141
|
3/4
|
75
|
175
|
249
|
7/8
|
96
|
225
|
321
|
1
|
145
|
338
|
483
|
1⅛
|
172
|
403
|
575
|
1¼
|
243
|
565
|
808
|
1⅜
|
252
|
590
|
843
|
1½
|
334
|
778
|
1113
|
19/16
|
228
|
531
|
759
|
1⅝
|
259
|
603
|
862
|
1¾
|
325
|
761
|
1086
|
1⅞
|
404
|
944
|
1348
|
2
|
496
|
1157
|
1653
|
2¼
|
717
|
1673
|
2389
|
2½
|
994
|
2317
|
3311
|
2¾
|
1337
|
3118
|
4454
|
3
|
1748
|
4078
|
5826
|
TABLE 1 / TORQUE NM - ASTM A193 AND ASTM A320 GRADE B8, CL2 STUD BOLTS
|
Element | B8 Class 2 |
Carbon | 0 - 0.15% |
Manganese | 0 - 1.00% |
Phosphorus, max | 0 - 0.040% |
Sulfur, max | 0 - 0.03% |
Silicon | 0 - 1.00% |
Chromium | 11.5 - 13.5% |
Nickel | - |
Molybdenum | - |
Grade
|
Size
|
Tensile ksi, min
|
Yield, ksi, min
|
Elong, %, min
|
RA % min
|
HBW
|
HRC
|
---|---|---|---|---|---|---|---|
B8 Class 2 Class 2
|
Up to 3/4
|
110
|
95
|
15
|
45
|
321 max
|
35 max
|
7/8 - 1
|
100
|
80
|
20
|
45
|
|||
1-1/8 - 1-1/4
|
95
|
65
|
25
|
45
|
|||
1-3/8 - 1-1/2
|
90
|
50
|
30
|
45
|
ASTM A193 Grand B8 Class 2 Stud Bolt
|
ASTM A193 B8 Class 2 Stud Bolts
|
Stainless Steel B8 Class 2 Threaded Rod
|
B8 Class 2 Hanger Bolt
|
SS B8 Class 2 Step Bolt
|
ASTM A 193 B8 Class 2 Stud Bolt
|
ISO Approved ASTM A193 U Bolts
|
Stainless Steel B8 Class 2 Studs Manufacturer
|
ASTM A 193 Tie Rod
|
ASTM A193 stud bolts Supplier
|
ASTM A 193 B8 Class 2 Heavy Hex Bolts
|
A193 B8 Class 2 Hex Nut
|
ASTM A193 B8 Class 2 Anchor Bolt
|
B8 Class 2 Shoulder Bolt
|
Stainless Steel B8 Class 2 Draw Bolt Supplier
|
B8 Class 2 Grub Screw
|
B8 Class 2 Stainless Steel Stud bolts
|
ASTM A 193 B8 Class 2 Studs Manufacturer
|
ASTM A 193 Eye Bolt Supplier
|
SS B8 Class 2 Plow Bolt Distributor
|
ASTM A 193 B8 Class 2 Lag Bolt Exporter
|
ASTM A193 B8 Class 2 Stud Bolts
|
ASTM A193 B8 Cl2
|
ASTM A193 B8 Cl1
|
ASTM A320 B8 Cl2
|
ASTM A320 Gr.B8 Cl.2
|
SA193 Nuts Exporter
|
ASTM A193 J Bolt
|
ASTM A193 And ASTM A320 Grade B8 Cl2 Stud Bolts
|
A320 Gr B8 Class 2
|