ASTM A193 Grade B8C Specification
The ASTM A193 Grade B8C specification, which is regulated by the ASTM Standard, includes externally threaded fasteners, such as high-tensile bolts, screws, stud bolts, anchor bolts, and threaded rods, all made of 347 stainless steel, which is corrosion-resistant. It is used in hard, special-purpose work where tensile loads and temperature are high, e.g, bolting of pressure piping and pressure vessels. Grade B8C an austenitic stainless steel that either is heat-treated or work-hardened, and sometimes both, which is why it is categorized into two different classes of strength, i.e., Class 1 and Class 2. The specification is very strict to outline the specifications of the chemical composition, mechanical properties, hardness, heat treatment, and the recommended mating nuts and washers.
| Property | Description |
| B8C Class 1 bolts | Carbide Solution Treated |
| B8C Class 2 bolts | Carbide Solution Treated & Strain Hardened |

ASTM A193 B8C Bolts, ASTM A193 Gr. B8C Stud Bolts, ASTM A193 Grade B8C Fasteners, ASME SA193 Gr. B8C Fasteners Manufacturer & Supplier in India
As the top manufacturers and suppliers, we specialize in providing high-quality ASTM A193 B8C Bolts that meet the standard requirements of Grade 347 stainless steel. Our ASTM fasteners have high chemical and physical properties to last in industrial and commercial applications through the use of high-quality raw materials.
We offer a comprehensive range of threaded fasteners, which are capable of holding and securing two or more objects steadily in case they are used in combination with appropriate nuts. We have B8C class 1 bolts and high-strength B8C class 2 bolts that are in our inventory and are classified according to your requirements based on strength, shape, and materials. The customers who want other alternatives may also be informed about the A193 B8C bolts equivalent.
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Quick Section Links
- ASTM A193 B8C Bolts Specifications
- Chemical Composition of ASTM A193 B8C Bolts
- Mechanical Properties of ASME SA193 Grade B8C Bolts
- ASTM A193 B8C Hex Bolt Dimensions
- ASTM A193 B8C Heavy Hex Bolt Dimensions
- A193 B8C Bolt Sizes
- Types of ASTM A193 B8C Bolts
- ASTM A193 B8C Bolts Inventory
- Available Stock of ASTM A193 B8C Bolts
- Applications of ASTM A193 B8C Bolts
- ASTM A193 B8C Bolts Price
ASTM A193 B8C Bolts Specifications
| Standard | ASTM A193 Grade B8C |
| Size | M16 – M120 |
| Length | UPTO 1200MM |
| Threads: | METRIC, BSW, BSF, UNC, UNF or as required |
| Standard: | DIN: DIN 931, DIN 933, DIN 934, DIN 970UTS – Unified Thread Standard : UNC, UNF, UNEF, UNS, NPT, NPTFISO – International Organization for Standardization : ISO 4032, ISO 4033, JIS standards |
| Packing: | canton, pallet, Small Boxs / carton / pallet, or customer request |
Chemical Composition of ASTM A193 B8C Bolts (AISI 347 Austenitic Stainless Steel)
| Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) | Chromium (Cr) | Nickel (Ni) | Columbium + Tantalum (Nb + Ta) |
|---|---|---|---|---|---|---|---|---|
| Composition (%) | 0.08 max | 2.00 | 0.045 max | 0.030 max | 1.00 max | 17.00 – 19.00 | 9.00 – 12.00 | 10 × Carbon Content – 1.10 |
Mechanical Properties of ASME SA193 Grade B8C Bolts
| ile Class | Diameter, Inch | Tensile Strength, min, ksi |
Yield Strength, min, 0.2% offset, ksi |
Elongation in 4D, min, % |
Reduction of Area, min, % |
Hardness, max |
|---|---|---|---|---|---|---|
| Class 1A | All Sizes | 75 | 30 | 30 | 50 | 223 HBW or 96 HRBC |
| Class 2B | 3/4 and under | 125 | 100 | 12 | 35 | 321 HBW or 35 HRC |
| over 3/4 to 1, inclusive | 115 | 80 | 15 | 35 | ||
| over 1 to 1-1⁄4, inclusive | 105 | 65 | 20 | 35 | ||
| over 1-1⁄4 to 11⁄2, inclusive | 100 | 50 | 28 | 45 |
“Contact Jade Special Metals today with your requirement for ASTM A193 B8C Bolts. We assure you of the best quote.
ASTM A193 B8C Hex Bolt Dimension

|
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
|
ASTM A193 B8C Heavy Hex Bolt Dimensions

|
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
|
6.5
|
A193 B8C Bolt Sizes

Types Of ASTM A193 B8C Bolts
ASTM A193 Grade B8C Hex Bolts
ASTM A193 Grade B8C Hex Head Bolts
ASTM A193 Grade B8C J Bolts
ASTM A193 Grade B8C Lag Bolts
ASTM A193 Grade B8C Stud Bolts
ASME SA 193 B8C High Performance Anchor Bolts
ASTM A193 Grade B8C Torx Bolts
ASTM A193 Grade B8C U Bolts
ASTM A193 Grade B8C Eye Bolts
Anchor Bolts
ASTM A193 Grade B8C 12-Point Flange Bolts
ASTM A193 Grade B8C Bolts
ASTM A193 Grade B8C Carriage Bolts
ASTM A193 Grade B8C Countersunk Bolts
ASTM A193 Grade B8C Allen Bolts
ASTM A193 Grade B8C Elevator Bolt
ASTM A193 Grade B8C Flange Head Bolts
ASTM A193 Grade B8C Forged Hook Bolts
ASTM A193 B8C Bolts Inventory


ASTM A193 B8C Stud Bolts

ASTM A193 B8C Hex Bolts
Available Stock of ASTM A193 B8C Bolts
- ASTM A193 B8C SS Step Bolt
- ASME SA 193 B8C SS J-Bolts
- ASME SA 193 B8C Hex Domed Cap Nuts
- ASTM A193 B8C SS Hex Head Bolt
- Stainless Steel B8C Shoulder Bolt
- ASME SA 193 B8C Castle Bolts
- ASTM A193 B8C Stud Bolts
- ASTM A193 B8C Foundation Bolts
- AISI 4140 Carriage Bolt
- ASTM A193 B8C Locking Bolts
- ASME SA 193 B8C Eye Bolt
- ASTM A193 B8C Lag Bolt
- ASTM A193 B8C SS Elevator Bolt
- AISI 4140 ASTM A193 B8C Self locking Bolts
- ASME SA 193 B8C Hex Domed Cap Nuts
- ASME SA 193 B8C Eye Bolt
- Stainless Steel B8C Shoulder Bolt
- ASTM A193 B8C Stud Bolts
- AISI 4140 Carriage Bolt
- AISI 4140 ASTM A193 B8C Self locking Bolts
- ASTM A193 B8C Foundation Bolts
- ASTM A193 B8C SS Hex Head Bolt
- ASTM A193 B8C Lag Bolt
- ASME SA 193 B8C Castle Bolts
- ASME SA 193 B8C SS J-Bolts
- ASTM A193 B8C SS Elevator Bolt
- ASTM A193 B8C Locking Bolts
- ASTM A193 B8C SS Step Bolt
Applications of ASTM A193 B8C Bolts
- Pipeline Engineering
- Marine Industry
- Chemical Industry
- Oil & gas industry
- Mechanical Engineering
- Plant Engineering
- Petrochemical Industry
- Power Industry
- Aerospace
- Food Processing Industry

ASTM A193 B8C Bolts Price
| Product Description | Price (US$ / Piece) |
| B8C Stud Bolt M12 x 400MM ASTM A193 | 0.90 – 1.10 |
| Stock ASTM A193 GR B8C Heavy Hex Bolt | 0.01 – 1.00 |
| ASTM A193 GR B8M B8T B8C Bolt | 0.20 – 20.00 |
| ASTM A193 B8C Stainless Steel Stud Bolt | 0.05 – 3.00 |
| ASTM A193 B8C Stud Bolt with ASTM B194 8C Nuts | 0.01 – 9.00 |
| DIN 975 M36 B8C Metric Thread Stud Bolt | 0.10 – 10.00 |
| Stainless Steel ASTM A193 B8 / B8M / B8T / B8C Studbolts | 0.01 – 5.00 |
| A193 B8T Full Threaded Stud Bolt and Nuts | 1.00 – 1.50 |
| High Quality ASTM A193 B8C Studs and Bolts | 0.10 – 5.00 |
| M60 Gr 8.8 B8C Thread Bar | 0.01 – 5.00 |
Note: This is an approximate price range for B8C bolts in India. For the final ASTM A193 Grade B8C Bolts price list, please mail us.





