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Astm A193 Grade B8m Bolts

Sa193 B8m Class 2 and 1 Studs and Nuts manufacturer at discounted price

Table Of Content:
ASTM A193 Grade B8 Bolts

 

Austenitic stainless steel bolts are also known as Grade B8 bolts. While alloy 304 is used to make grade B8 bolts, the production ofASTM 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 ideally suited for marine engineering applications. These bolts made of stainless steel can also be referred to as marine grade. Divvied up 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 1have only undergone a solution annealing procedure. In contrast, if the fasteners were placed in class 2, for instanceastm 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

Standard Specification of ASTM A193 B8M Bolts
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

 

 

Bolts Price of ASTM A193 B8M
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

 

What is the difference between A193 Grade B8 and Grade B8M?

while Grade B8M bolts are produced using a more corrosion-resistant type 316 stainless steel, These bolts have comparable strength prerequisites however contrast in their corrosion resistance. Evaluation B8 bolts are produced using type 304 stainless steel.

 

Testing applied on astm a193 grade b8m threaded rod
Testing applied on astm a193 grade b8m threaded ro
  • Positive Material Identification Test
  • Hardness Test
  • Tensile Testing Machine
  • IGC Test

 

 

 

A193 B8M Material Recommended Nuts & Washers
Bolting Grade Nut Grade Washer Grade
ASTM A193 Grade B8M, B8MA, B8M2, B8M3 ASTM A194 Grade 8M, 8MA SS 316

 

A193 B8M Heavy Hex Bolts Packaging
astm a193 b8m fasteners packaging
astm a193 b8m bolts packaging

 

ASTM A193 Gr B8m Studs Raw Material
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

 

 

ASME SA193 B8M Bolts Dimensions

Hex Bolt Dimension

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
A193 B8M Heavy Hex Bolts Dimensions

ASTM A193 B6 Heavy Hex Bolt Dimension

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.

 

Size Chart of ASTM A193 Grade B8M Bolt

Bolt Size Chart

 

Available Types of ASTM A193 B8M Bolts
ASTM A193 B8M Heavy Hex Bolts

ASTM A193 B8M Heavy Hex Bolts

A193 B8M Anchor Bolts

A193 B8M Anchor Bolts

ASTM A193 B8M Allen Cap Bolt

ASTM A193 B8M Allen Cap Bolt

ASME SA193 B8M U Bolts

ASME SA193 B8M U Bolts

ASTM A193 B8M Double Ended Studs

ASTM A193 B8M Double Ended Studs

SA193 B8M Hex Bolts

SA193 B8M Hex Bolts

ASTM A193 B8M Threaded Rod

ASTM A193 B8M Threaded Rod

ASTM A193 B8M Square Bolts

ASTM A193 B8M Square Bolts

 

Torque Chart of ASME SA193 B8m Bolts
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

 

SA193 B8m Bolts Temperature Range
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
  
 

 

Weight Chart of ASTM A193 B8M Bolts
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

 

Tensile Stress Areas And Threads Per Inch
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

 

ASME SA193 B8M Bolt Marking
Class Manufacturer's Mark Grade Symbol
Class 1 Simplex Steel B8M
Class 1B B8Y or B8MN
Class 1D B95
Class 2 B8MSH

 

ASTM A193 B8M Nuts Weight Chart
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

 

 

DIN And ISO Designations A193 B8M Material
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

 

SA193 B8M Studs Bolt size chart
 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

 

Ansi And/Or Asme Standards A193 B8M Heavy Hex Bolts
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

 

Coatings of ASTM A193 B8M Bolts
ASTM A193 B8M Bolts Coatings
Mirror Buffed
Hot Dipped Galvanizing
Epoxy Coating
Electro Polished
Passivation
Teflon Coating
Oxidized
Zinc Plating
Chrome Plating

 

Comparision Of Metric Sizes To The Closest Inch Equivalent
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)

 

Application of ASTM A193 B8m Class 1 bolts
  • power Generation
  • spiral Welded Tube For Burner Pipes And Flues
  • off-shore Oil Drilling Companies
  • sea Water Equipment
  • petrochemicals
  • aircraft Exhaust Manifolds
  • pharmaceutical Equipment
  • pharmaceuticals
  • gas Processing
  • heat Exchangers
  • specialty Chemicals

 

Din Standard of A193 B8M Heavy Hex Bolts
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

 

Chemical Composition of ASTM A193 B8m Bolts
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%
ASTM A193 B8M Mechanical Properties
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
Ready Stock Of ASTM A193 B8M Bolts
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

 

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