Grade B8 bolts are referred to as austenitic stainless steel bolts. While grade B8 bolts are produced from alloy 304, the production of ASTM A193 B8m Bolts is from alloy 316. Considered to be better than grade b8, the improved corrosion resistance to brine solutions as well as seawater makes the A193 B8M Heavy Hex Bolts well suited to marine engineering purposes. These stainless steel bolts may also be referred to as marine grade. Segregated into two classes, the ASME SA193 B8M Nuts are carbide solution treated or solution annealed.
These processes tend to bring out better characteristics of the alloy including a higher B8M Yield Strength. The resistance to corrosion is also increased, especially if the bolts require welding. Since the carbon content is slightly high in the A193 B8M Material, there could be a risk of intergranular corrosion. By solution annealing, the material minimizes this risk by the removal of unwanted phases/carbides in the alloy of astm a193 grade b8m threaded rod. The use of this grade is advantageous to several high temperature applications, especially since the ASTM A193 Gr b8m bolt is a testament to properties such as higher creep and better stress to rupture.
Moreover, the ASTM A193 B8M Nuts can also exhibit a higher tensile strength at elevated temperatures. Fasteners that belong to ASTM A193 B8m Class 1 have been treated solely to a solution annealing process. On the other hand, if the fasteners have been classified into class 2, for e.g. astm a193 b8m class 2 bolts, the alloy will undergo a strain or work hardening process. The plastic deformation of class 2 ASTM A193 Gr B8m Studs brings about an increase in the ultimate tensile strength.
before buy from india see Comparision of Astm A193 Grade B8m Bolts price with ASTM A193 Grade B6 Bolts price list
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 |
| Description | Per Unit (INR) | price in USD | Price in EURO |
|---|---|---|---|
| Stainless Steel Threaded Bars (In Inch)5/8 Unc Grade : Astm A 193 B8 Class Ii(304l) Order No. 29278 | 168 | 2.28 | 1.86 |
| Stainless Steel Threaded Bars (In Inch)1 Unc Grade : Astm A 193 B8 Class Iiorder No. 29278 | 168 | 2.28 | 1.86 |
| Stainless Steel Threaded Bars (In Inch )1 Unc Grade :astm A 193 B8m Class Ii (316l) Order No. 29278 | 213 | 2.89 | 2.36 |
| Stainless Steel Threaded Bars (In Inch )5/8 Unc Grade : Astm A 193 B8 Classi (304l) Order No. 29278 | 147 | 2.00 | 1.63 |
| Stainless Steel Threaded Bars ( In Inch)7/8 Unc Grade :astm A 193 B8 Class I(304l) Order No. 29278 | 147 | 2.00 | 1.63 |
| Stainless Steel Threaded Bars In Inch )1-1/2 8 Un Grade : Astm A 193 B8m Classi (316l) Order No. 29278 | 192 | 2.61 | 2.13 |
| Stainless Steel Threaded Bars (In Inch)7/8 Unc Grade Astm : A 193 B8 M Classii (316l) Order No. 29278 | 213 | 2.89 | 2.36 |
| Stainless Steel Threaded Bars (In Inch )1-3/8 8 Un Grade : Astm A 193 B8 M Class Ii (316l) Order No. 29278 | 213 | 2.89 | 2.36 |
| Stainless Steel Threaded Bars (In Inch)5/8 Unc Grade : Astm A 193 B8m Class I(316l) Order No. 29278 | 192 | 2.61 | 2.13 |
| Stainless Steel Threaded Bars (In Inch )m36 Grade : Astm A 193 B8m Class I (316l) Order No. 29278 | 192 | 2.61 | 2.13 |
These bolts have comparable strength prerequisites however contrast in their corrosion resistance. Evaluation B8 bolts are produced using type 304 stainless steel, while Grade B8M bolts are produced using a more corrosion-resistant type 316 stainless steel.
| Bolting Grade | Nut Grade | Washer Grade |
|---|---|---|
| ASTM A193 Grade B8M, B8MA, B8M2, B8M3 | ASTM A194 Grade 8M, 8MA | SS 316 |
| Grade | Tensile Class | Raw Material Description |
|---|---|---|
| B8M | Class 1 | AISI 316 Stainless Steel, Carbide Solution Treated |
| B8M | Class 2 | AISI 316 Stainless Steel, Carbide Solution Treated and Strain Hardened |
NOMINAL SIZE (D) |
BODY DIAMETER |
HEAD THICKNESS |
ACROSS THE FLATS |
ACROSS BOLTS 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
|
SPEC |
GRADE |
TEMPERATURE deg F (deg C) |
|||||||||
650 |
700 |
750 |
800 |
850 |
900 |
950 |
1000 |
1050 |
1100 |
||
343 |
371 |
399 |
427 |
454 |
482 |
510 |
538 |
566 |
593 |
||
ASTM A193 |
B6 |
21.2 |
21.2 |
21.2 |
19.5 |
15.6 |
12 |
||||
ASTM A193 |
B7(*) |
||||||||||
ASTM A193 |
B7M |
25 |
25 |
23.6 |
21 |
17 |
12.5 |
8.5 |
4.5 |
||
ASTM A193 |
(*) |
20 |
20 |
20 |
18.5 |
16.2 |
12.5 |
8.5 |
4.5 |
||
ASTM A193 |
B8-CL1 |
11.2 |
11 |
10.8 |
10.5 |
10.3 |
10.1 |
9.9 |
|||
ASTM A193 |
B8-CL2 |
25 |
|||||||||
ASTM A193 |
(* *) |
25 |
25 |
25 |
25 |
23.5 |
20.5 |
16 |
11 |
6.3 |
2.8 |
ASTM A193 |
B16 |
||||||||||
ASTM A320 |
L7 |
25 |
25 |
||||||||
BS |
B17B |
20 |
19.8 |
19.8 |
19.8 |
19.7 |
19.7 |
19.6 |
19.4 |
19.3 |
16.6 |
ASTM 453 |
660 |
20.2 |
20.1 |
20 |
19.9 |
19.9 |
19.9 |
19.8 |
19.8 |
||
| MM THREADS AS PER IS 1363/67 | ||||||||||
| APPROXIMATE WEIGHT IN KGS FOR 100 NOS | ||||||||||
| LENGTH | DIAMETER | |||||||||
| M 5 | M 6 | M 8 | M 10 | M 12 | M 14 | M 16 | M 18 | M 20 | M 22 | |
| 16 mm | 0.448 | 0.743 | 1.590 | 3.211 | ||||||
| 20 mm | 0.598 | 0.812 | 1.711 | 3.411 | 4.892 | |||||
| 25 mm | 0.660 | 0.897 | 1.871 | 3.660 | 5.252 | 8.170 | ||||
| 30 mm | 0.737 | 1.010 | 2.070 | 3.912 | 5.574 | 9.690 | 10.707 | 18.657 | ||
| 35 mm | 0.804 | 1.120 | 2.271 | 4.223 | 5.974 | 10.000 | 11.416 | 16.026 | 19.608 | |
| 40 mm | 0.881 | 1.230 | 2.470 | 4.533 | 6.410 | 10.288 | 12.107 | 16.667 | 20.747 | |
| 45 mm | 0.958 | 1.340 | 2.671 | 4.840 | 6.859 | 10.504 | 12.821 | 17.241 | 21.739 | |
| 50 mm | 1.030 | 1.450 | 2.870 | 5.155 | 7.299 | 11.261 | 13.624 | 17.857 | 22.727 | 28.409 |
| 55 mm | 1.560 | 3.071 | 5.464 | 7.740 | 11.628 | 14.409 | 18.868 | 23.810 | 30.120 | |
| 60 mm | 1.670 | 3.270 | 5.774 | 8.183 | 12.255 | 15.244 | 20.000 | 25.126 | 32.051 | |
| 65 mm | 1.781 | 3.472 | 6.083 | 8.621 | 12.626 | 16.026 | 21.008 | 26.455 | 34.014 | |
| 70 mm | 1.890 | 3.671 | 6.394 | 9.058 | 12.987 | 16.835 | 22.124 | 27.778 | 35.461 | |
| 75 mm | 2.000 | 3.873 | 6.702 | 9.506 | 13.228 | 17.606 | 23.256 | 29.070 | 39.063 | |
| 80 mm | 2.111 | 4.072 | 7.013 | 10.000 | 13.889 | 18.248 | 24.510 | 30.303 | 40.000 | |
| 90 mm | 4.472 | 7.634 | 10.917 | 14.925 | 19.841 | 26.042 | 33.113 | 41.667 | ||
| 100 mm | 4.873 | 8.251 | 11.820 | 16.340 | 21.459 | 27.778 | 35.714 | 46.296 | ||
| 110 mm | 8.881 | 12.723 | 17.730 | 23.041 | 31.250 | 38.168 | 47.170 | |||
| 120 mm | 9.506 | 13.624 | 18.797 | 24.631 | 32.895 | 40.984 | 50.000 | |||
| 130 mm | 10.101 | 14.535 | 20.000 | 26.316 | 34.722 | 43.478 | 52.632 | |||
| 140 mm | 10.707 | 15.432 | 20.833 | 27.933 | 35.461 | 46.296 | 55.556 | |||
| 150 mm | 11.312 | 16.340 | 22.222 | 29.412 | 37.594 | 48.544 | 58.824 | |||
| 160 mm | 11.905 | 17.241 | 24.272 | 31.056 | 40.984 | 50.505 | 61.728 | |||
| 170 mm | 12.500 | 18.116 | 32.680 | 53.191 | 64.935 | |||||
| 180 mm | 13.123 | 19.011 | 26.882 | 34.247 | 55.556 | 67.568 | ||||
| 190 mm | 13.736 | 19.920 | 35.971 | 58.140 | 70.423 | |||||
| 200 mm | 14.327 | 20.833 | 29.586 | 37.594 | 49.020 | 60.976 | 73.529 | |||
| 220 mm | 15.528 | 22.624 | 40.650 | 65.789 | 79.365 | |||||
| 240 mm | 16.722 | 24.510 | 43.860 | 71.429 | 84.746 | |||||
| 250 mm | 17.301 | 25.381 | 45.455 | 74.627 | 87.719 | |||||
| 260 mm | 17.921 | 26.316 | 47.170 | 76.923 | 90.909 | |||||
| 280 mm | 19.157 | 28.090 | 50.505 | 81.967 | 98.039 | |||||
| 300 mm | 20.325 | 29.940 | 53.763 | 87.719 | 104.167 | |||||
| 320 mm | 31.646 | 56.818 | 92.593 | |||||||
| 340 mm | 33.557 | 60.241 | 98.039 | |||||||
| 360 mm | 35.211 | 63.291 | 104.167 | |||||||
| 380 mm | 37.037 | 66.667 | 108.696 | |||||||
| 400 mm | 39.063 | 69.444 | 113.636 | |||||||
| Nominal Size, inch. | Coarse Threads - UNC | Fine Threads - UNF | 8 Thread Series - 8UN | |||
|---|---|---|---|---|---|---|
| Threads / inch | Stress AreaA, in2 | Threads / inch | Stress AreaA, in2 | Threads / inch | Stress AreaA, in2 | |
| 1/4 | 20 | 0.0318 | 28 | 0.0364 | -- | -- |
| 5/16 | 18 | 0.0524 | 24 | 0.0580 | -- | -- |
| 3/18 | 16 | 0.0775 | 24 | 0.0878 | -- | -- |
| 7/16 | 14 | 0.1063 | 20 | 0.1187 | ||
| 1/2 | 13 | 0.1419 | 20 | 0.1599 | ||
| 9/16 | 12 | 0.1820 | 18 | 0.2030 | ||
| 5/8 | 11 | 0.2260 | 18 | 0.2560 | ||
| 3/4 | 10 | 0.3340 | 16 | 0.3730 | ||
| 7/8 | 9 | 0.4620 | 14 | 0.5090 | ||
| 1 | 8 | 0.6060 | 12 | 0.6630 | ||
| 1 1/8 | 7 | 0.7630 | 12 | 0.8560 | 8 | 0.790 |
| 1 1/4 | 7 | 0.9690 | 12 | 1.0730 | 8 | 1.000 |
| 1 3/8 | 6 | 1.1550 | 12 | 1.3150 | 8 | 1.233 |
| 1 1/2 | 6 | 1.4050 | 12 | 1.5810 | 8 | 1.49 |
| Class | Manufacturer's Mark | Grade Symbol |
|---|---|---|
| Class 1 | Raaj Sagar | B8M |
| Class 1B | B8Y or B8MN | |
| Class 1D | B95 | |
| Class 2 | B8MSH |
| Size | Finished Hex | Heavy Hex | Finished Jam | Heavy Hex Jam | Square | Heavy Square |
| 1/2″ Nut | 3.75 | 6.54 | 2.62 | 4.00 | 5.78 | 7.87 |
| 5/8″ Nut | 7.33 | 11.9 | 4.93 | 6.96 | 10.8 | 14.3 |
| 3/4″ Nut | 11.9 | 19.3 | 7.70 | 11.0 | 15.4 | 23.5 |
| 7/8″ Nut | 19.0 | 29.7 | 12.0 | 16.7 | 24.5 | 36.2 |
| 1″ Nut | 28.3 | 42.5 | 17.6 | 23.5 | 36.3 | 51.5 |
| 11/8″ Nut | 40.3 | 59.2 | 24.7 | 32.4 | 52.5 | 72.4 |
| 11/4″ Nut | 54.3 | 78.6 | 36.1 | 45.8 | 70.6 | 95.5 |
| 13/8″ Nut | 73.0 | 102 | 47.9 | 59.3 | 94.5 | 125.0 |
| 11/2″ Nut | 94.3 | 131 | 60.9 | 74.8 | 122 | 161 |
| 15/8″ Nut | 162 | 91.6 | ||||
| 13/4″ Nut | 151 | 204 | 100 | 114 | ||
| 17/8″ Nut | 241 | 134 | ||||
| 2″ Nut | 224 | 299 | 140 | 165 | ||
| 21/4″ Nut | 419 | 227 | ||||
| 21/2″ Nut | 564 | 332 | ||||
| 23/4″ Nut | 738 | 429 | ||||
| 3″ Nut | 950 | 545 | ||||
| 31/4″ Nut | 1194 | 651 | ||||
| 31/2″ Nut | 1526 | 851 | ||||
| 33/4″ Nut | 1812 | 1005 | ||||
| 4″ Nut | 2180 | 1200 |
| ASTM A193 B8 Bolts DIN No. | Description |
|---|---|
| 84 | Slotted Cheese Head Machine Screws |
| 94 | Cotter Pin |
| 125A | Flat Washer (without Chamfer) |
| 125B | Flat Washer (with Chamfer) |
| 439B | Machine Screws Hex Nut, Finished Hex Jam Nut |
| 127B | Split Lock Washer |
| 137B | Spring Wave Washer |
| 315 | Wing Nut |
| 916 | Hex Socket Set Screws |
| 911 | Long Arm Hex Key |
| 912 | Hex Socket Head Cap Screws |
| 939 | Double End Stud |
| 931 | Hex Head Cap Screws Partially Threaded |
| 933 | Hex Head Cap Screws Fully Threaded |
| 934 | Finished Hex Nut |
| 963 | Slotted Flat Head Machine Screws |
| 960 | Hex Head Cap Screws Partially Threaded |
| 961 | Hex Head Cap Screws Fully Threaded |
| 964 | Slotted Oval Head Machine Screws |
| 966 | Phillips Oval Head Machine Screws |
| 975 | Threaded Rod |
| 980V | Hex Steel Prevailing Torque Lock Nut |
| 985 | Hex Nylon Insert Lock Nut |
| 6334 | Rod Coupling Nut |
| 965 | Phillips Flat Head Machine Screws |
| 6797A | External Tooth Lock Washer |
| 6797J | Internal Tooth Lock Washer |
| 6912 | Hex Low Socket Head Cap Screws |
| 6921 | Hex Flange Head Screws |
| 7985 | Phillips Pan Head Machine Screws |
| 6923 | Hex Flange Nut |
| ISO 7379 | Hex Socket Head Shoulder Screws |
| ISO 7380 | Hex Button Socket Head Cap Screws |
| 7991 | Hex Flat Socket Head Cap Screws |
| Class 150 Flanges ASME B16.5 (Stud bolt sizes) | Length of Stud Bolts | |||||||
| NPS | Outside Diameter of Flange | The diameter of Bolt Circle | The diameter of Bolt Holes | Number of Bolts | Diameter of Bolts | Raised Face 0.06 in |
Ring Joint | |
| 1/2 | 3 1/2 | 2 3/8 | 5/8 | 4 | 1/2 | 2 1/4 | – | |
| 3/4 | 3 7/8 | 2 3/4 | 5/8 | 4 | 1/2 | 2 1/2 | – | |
| 1 | 4 1/4 | 3 1/8 | 5/8 | 4 | 1/2 | 2 1/2 | 3 | |
| 1 1/4 | 4 5/8 | 3 1/2 | 5/8 | 4 | 1/2 | 2 3/4 | 3 1/4 | |
| 1 1/2 | 5 | 3 7/8 | 5/8 | 4 | 1/2 | 2 3/4 | 3 1/4 | |
| 2 | 6 | 4 3/4 | 3/4 | 4 | 5/8 | 3 1/4 | 3 3/4 | |
| 2 1/2 | 7 | 5 1/2 | 3/4 | 4 | 5/8 | 3 1/2 | 4 | |
| 3 | 7 1/2 | 6 | 3/4 | 4 | 5/8 | 3 1/2 | 4 | |
| 3 1/2 | 8 1/2 | 7 | 3/4 | 8 | 5/8 | 3 1/2 | 4 | |
| 4 | 9 | 7 1/2 | 3/4 | 8 | 5/8 | 3 1/2 | 4 | |
| 5 | 10 | 8 1/2 | 7/8 | 8 | 3/4 | 3 3/4 | 4 1/4 | |
| 6 | 11 | 9 1/2 | 7/8 | 8 | 3/4 | 4 | 4 1/2 | |
| 8 | 13 1/2 | 11 3/4 | 7/8 | 8 | 3/4 | 4 1/4 | 4 3/4 | |
| 10 | 16 | 14 3/4 | 1 | 12 | 7/8 | 4 1/2 | 5 | |
| 12 | 19 | 17 | 1 | 12 | 7/8 | 4 3/4 | 5 1/4 | |
| 14 | 21 | 18 3/4 | 1 1/8 | 12 | 1 | 5 1/4 | 5 3/4 | |
| 16 | 23 1/2 | 21 1/4 | 1 1/8 | 16 | 1 | 5 1/4 | 5 3/4 | |
| 18 | 25 | 22 3/4 | 1 1/4 | 16 | 1 1/8 | 5 3/4 | 6 1/4 | |
| 20 | 27 1/2 | 25 | 1 1/4 | 20 | 1 1/8 | 6 1/4 | 6 3/4 | |
| 24 | 32 | 29 1/2 | 1 1/4 | 20 | 1 1/4 | 6 3/4 | 7 1/4 | |
| Class 300 Flanges ASME B16.5 | Length of Stud Bolts | |||||||
| NPS | Outside Diameter of Flange | The diameter of Bolt Circle | The diameter of Bolt Holes | Number of Bolts | Diameter of Bolts | Raised Face 0.06 in |
Ring Joint | |
| 1/2 | 3 3/4 | 2 5/8 | 5/8 | 4 | 1/2 | 2 1/2 | 3 | |
| 3/4 | 4 5/8 | 3 1/4 | 3/4 | 4 | 5/8 | 3 | 3 1/2 | |
| 1 | 4 7/8 | 3 1/2 | 3/4 | 4 | 5/8 | 3 | 3 1/2 | |
| 1 1/4 | 5 1/4 | 3 7/8 | 3/4 | 4 | 5/8 | 3 1/4 | 3 3/4 | |
| 1 1/2 | 6 1/8 | 4 1/2 | 7/8 | 4 | 3/4 | 3 1/2 | 4 | |
| 2 | 6 1/2 | 5 | 3/4 | 8 | 5/8 | 3 1/2 | 4 | |
| 2 1/2 | 7 1/2 | 5 7/8 | 7/8 | 8 | 3/4 | 4 | 4 1/2 | |
| 3 | 8 1/4 | 6 5/8 | 7/8 | 8 | 3/4 | 4 1/4 | 4 3/4 | |
| 3 1/2 | 9 | 7 1/4 | 7/8 | 8 | 3/4 | 4 1/4 | 5 | |
| 4 | 10 | 7 7/8 | 7/8 | 8 | 3/4 | 4 1/2 | 5 | |
| 5 | 11 | 9 1/4 | 7/8 | 8 | 3/4 | 4 3/4 | 5 1/4 | |
| 6 | 12 1/2 | 10 5/8 | 7/8 | 12 | 3/4 | 4 3/4 | 5 1/2 | |
| 8 | 15 | 13 | 1 | 12 | 7/8 | 5 1/2 | 6 | |
| 10 | 17 1/2 | 15 1/4 | 1 1/8 | 16 | 1 | 6 1/4 | 6 3/4 | |
| 12 | 20 1/2 | 17 3/4 | 1 1/4 | 16 | 1 1/8 | 6 3/4 | 7 1/4 | |
| 14 | 23 | 20 1/4 | 1 1/4 | 20 | 1 1/8 | 7 | 7 1/2 | |
| 16 | 25 1/2 | 22 1/2 | 1 3/8 | 20 | 1 1/4 | 7 1/2 | 8 | |
| 18 | 28 | 24 3/4 | 1 3/8 | 24 | 1 1/4 | 7 3/4 | 8 1/4 | |
| 20 | 30 1/2 | 27 | 1 3/8 | 24 | 1 1/4 | 8 | 8 3/4 | |
| 24 | 36 | 32 | 1 5/8 | 24 | 1 1/2 | 9 | 10 | |
| ASME B18.1.1 | Small Solid Rivets | ASME B18.8.1 | Clevis Pins and Cotter Pins |
|---|---|---|---|
| ASME B18.1.2 | Large Rivets | ASME B18.8.2 | Taper Pins, Dowel Pins, Straight Pins, Grooved Pins and Spring Pins |
| ASME B18.2.1 | Square and Hex Bolts and Screws | ASME B18.9 | Plow Bolts |
| ASME B18.2.2 | Square and Hex Nuts | ASME B18.10 | Track Bolts and Nuts |
| ASME B18.2.6 | Fasteners for use in Structural Applications | ASME B18.11 | Miniature Screws |
| ASME B18.3 | Socket Cap, Shoulder and Set Screws | ASME B18.13 | Screws and Washer Assemblies (Sems) |
| ASME B18.5 | Round Head Bolts | ASME B18.15 | Forged Eyebolts |
| ASME B18.6.2 | Slotted Head Cap Screws, Square Head Set Screws, and Slotted Headless Set Screws | ASME B18.17 | Wing Nuts, Thumb Screws and Wing Screws |
| ASME B18.6.3 | Machine Screws and Machine Screws Nuts | ASME B18.21.1 | Lock Washers |
| ASME B18.6.4 | Thread Forming and Thread Cutting Tapping Screws and Metallic Drive Screws | ASME B18.22.1 | Plain Washers |
| ASME B18.7 | General Purpose Semi- Tubular Rivets, Full Tubular Rivets, Split Rivets and Rivet Caps | ASME B18.23.1 | Beveled Washers |
ASTM A193 B8M Bolts Coatings |
|||||
Mirror Buffed |
Hot Dipped Galvanizing |
Epoxy Coating |
Electro Polished |
Passivation |
|
Teflon Coating |
Oxidized |
Zinc Plating |
Chrome Plating |
||
Metric |
Closest Inch |
|---|---|
M1.4-0.3 |
0-80 (Larger) |
M2-0.4 |
1-64 (Smaller) |
M2.5-0.45 |
3-56 (Larger) |
M3-0.5 |
4-48 (Smaller) |
M3.5-0.6 |
6-40 (Same) |
M4-0.7 |
8-36 (Larger) |
M5-0.8 |
10-32 (Smaller) |
M6-1.0 |
1/4-28 (Larger) |
M7-1.0 |
1/4-28 (Smaller) |
M8-1.25 |
5/16-18 (Smaller) |
M10-1.5 |
3/8-16 (Smaller) |
M12-1.75 |
1/2-13 (Larger) |
M14-2.0 |
9/16-12 (Larger) |
M16-2.0 |
5/8-11 (Smaller) |
M18-2.5 |
3/4-10 (Larger) |
M20-2.5 |
3/4-10 (Smaller) |
M22-2.5 |
7/8-9 (Larger) |
M24-3.0 |
1-8 (Larger) |
M30-3.5 |
1 1/8-7 (Smaller) |
M36-4.0 |
1 3/8-6 (Smaller) |
| DIN 931 | BS4882 | DIN 934 | DIN 912 |
| DIN 933 | DIN 976 | BS 1768 | DIN 6912 |
| BS 1768 | BS 1769 | DIN 7984 | |
| UNI 5731 | BS 1083 | ANSI B18.3 | |
| UNI 5739 | BS 3692 | ISO 4762 | |
| ISO 4014 | ISO 4032 | UNI 5931 | |
| ISO 4017 | ISO 4033 | BS 2470 | |
| BS 1769 | ANSI B18.2.2 | BS 4168 | |
| BS 3692 | |||
| ANSI B18.2.1 |
| Socket & Slotted Set Screws | Socket & Slotted Countersunk Screws | Studs | Washers |
|---|---|---|---|
| DIN 913 | DIN 963 | DIN 938 | DIN 125 |
| DIN 914 | DIN 7991 | DIN 939 | DIN 9021 |
| DIN 915 | BS 4168 | DIN 2510 | BS 4320 |
| DIN 916 | BS 1981 | BS 4439 | BS 3410 |
| DIN 551 | BS 483 | BS 2693 | |
| DIN 553 | BS 2470 | Spring Washers | |
| DIN 438 | DIN 127 | ||
| BS 4168 | BS 4464 | ||
| BS 1802 |
Element |
B8M (AISI 316) |
|---|---|
Carbon |
0.08% max |
Manganese |
2.00% max |
Phosphorus, max |
0.045% |
Sulfur, max |
0.030% |
Silicon |
1.00% max |
Chromium |
16.0 – 18.0% |
Nickel |
10.0 – 14.0% |
Molybdenum |
2.00 – 3.00% |
B8M Class 1 |
All |
75 |
30 |
30 |
50 |
223 max |
96 max |
B8M 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 |
B8M Stainless Steel Stud bolts |
ASTM A193 B8M Studs |
ASTM A193 B8M Lag Bolt |
ASTM A193 B8M Stud Bolts |
ASTM A193 Eye Bolt |
SS B8M Plow Bolt |
SA193 Nuts |
ASTM A193 J Bolt |
SS B8M Step Bolt |
ASTM A193 B8M Stud Bolt |
