The specification A193 B8c Class 1 Material has good mechanical properties. For instance, the Sa 193 Gr B8c Bolts has excellent resistance to corrosion to a wide spectrum of corrosive mediums. These good mechanical properties in the A193 B8c Material make them popular in the industry. These fasteners also have a tough construction as well as well as a longer shelf life.
Table of Content
It is because of these features, that the Sa193 B8c Bolts are found in many applications. For eg. They are used in equipment’s in industries like automobile, desalination plants, oil and gas exploration, sugar plants, petrochemicals etc.The ASTM A193 Grade B8C specification material is known for being a corrosion resistant grade. The ASTM A193 Grade B8c material is used in those applications which demand that the fastener have a high tensile strength and the ability to withstand high temperature.
Therefore they can be seen in equipment’s and special purpose applications like pressure piping & pressure vessels bolting. ASTM A193 Gr. B8c is a heat-treated, work-hardened (or a combination of both treatments) austenitic stainless steel. Further, the ASTM A193 Grade B8c is divided into two classes .Both Class 1 and class 2, each have a distinguished tensile strength.
Grade |
Tensile Class |
Raw Material Description |
|---|---|---|
B8C |
Class 1 |
AISI 347 Stainless Steel, Carbide Solution Treated |
B8C |
Class 2 |
AISI 347 Stainless Steel, Carbide Solution Treated and Strained Hardened |
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 ASTM Specifications
Standards |
Designation |
|---|---|
ASTM |
A193 B8C: Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened |
ASTM A193 B8C Fasteners |
Price |
ASTM A193 B8C Stainless steel stud bolt |
US$ 0.05-US$ 3.00 / Piece |
tainless Steel ASTM A193 B8 B8M B8t B8C Studbolts |
US$ 0.01-US$ 5.00 / Piece |
B8C STUD BOLT M12 X 400MM ASTM A193 |
US$ 0.90-US$ 1.10 / Piece |
ASTM A193 B8C stud bolt with ASTM B194 8C nuts |
US$ 0.01-US$ 9.00 / Piece |
Stock ASTM A193 GR B8C Heavy Hex Bolt |
US$ 0.01-US$ 1.00 / Piece |
A193 B8T full threaded stud bolt and nuts |
US$ 1.00-US$ 1.50 / Piece |
ASTM A193 GR B8M B8T B8C BOLT |
US$ 0.20-US$ 20.00 / Piece |
DIN 975 M36 B8C Metric Thread Stud Bolt |
US$ 0.10-US$ 10.00 / Piece |
ASTM A193 B8C Hex Bolt Dimension

**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. |


ASTM |
A193 Grade B8C |
Percentage |
% |
C. |
0.08 max. |
Mn. |
2.00 max. |
Si. |
1.00 max. |
P. |
0.045 max. |
S. |
0.030 max. |
Cr. |
17.00---19.00max. |
Ni. |
12.00---13.00max. |
Mo. |
---- |
Grade |
Diameter |
Tensile Strength |
Yield Strength |
Elongation |
Reduction |
Hardness |
|---|---|---|---|---|---|---|
Grade B8C |
M20 and under |
860 |
690 |
12 |
35 |
321 HBW or 35 HRC |
Grade B8C |
M20 to M24, inclusive |
690 |
550 |
20 |
45 |
321 HBW or 35 HRC |
Grade B8C |
M24 to M30, inclusive |
655 |
450 |
25 |
45 |
321 HBW or 35 HRC |
Grade B8C |
M30 to M36, inclusive |
620 |
345 |
30 |
45 |
321 HBW or 35 HRC |
ASTM A193 Grand B8C Stud Bolt |
ASTM A193 B8C Stud Bolts |
SS B8C Step Bolt |
ASTM A 193 B8C Stud Bolt |
Stainless Steel B8C Threaded Rod |
B8C Hanger Bolt |
ISO Approved ASTM A193 U Bolts |
Stainless Steel B8C Studs Manufacturer |
ASTM A 193 B8C Heavy Hex Bolts |
A193 B8C Hex Nut |
ASTM A 193 Tie Rod |
ASTM A193 stud bolts Supplier |
Stainless Steel B8C Draw Bolt Supplier |
B8C Grub Screw |
ASTM A193 B8C Anchor Bolt |
B8C Shoulder Bolt |
B8C Stainless Steel Stud bolts |
ASTM A 193 B8C Studs Manufacturer |
ASTM A 193 B8C Lag Bolt Exporter |
ASTM A193 B8C Stud Bolts |
ASTM A 193 Eye Bolt Supplier |
SS B8C Plow Bolt Distributor |
SA193 Nuts Exporter |
ASTM A193 J Bolt |