ASTM A193 B8m Bolts

ASME SA 193 B8m CL1 Studs, Hex Bolt and B8m nuts manufacturer in India.



asme sa 193 b8m cl1 studs

Difference Between B8m Class 1 And Class 2?

The ASTM A193 B8m Bolts specification covers both alloy steel as well as stainless steel bolting material. The bolting produced from ASTM A193 Grade B8m Bolts are meant to be used for applications in pressure vessels, valves, flanges, and fittings. Typically, the ASTM A193 B8m Class 1 Bolts is used for high temperature or high pressure service, as well as for other special purpose applications. Ferritic steels which fall under the ASTM A193 Grade B8m Class 2 Bolts category must be properly heat treated as, what best suits the high temperature features of each grade. Immediately after rolling or forging, the bolting ASTM A193 B8m Torque material has to be allowed to be cooled.

ASTM A193 Grade B8m Class 2 Bolts

ASTM A193 Grade B8m Class 2 Bolts

ASME SA 193 B8m CL1 Hex Nut

ASME SA 193 B8m CL1 Hex Nut

 Grade B8M Studs

Grade B8M Studs


astm a193 grade b8m class 2 bolts supplier


Manufacturer and supplier of ASTM A193 gr B8m Threaded Rod in Both Metric and Imperial (BSW, BSF, BA, UNC & UNF) Thread Forms in Mumbai.


The steel A193 B8M Bolts must not contain an unspecified element for ordered grade to an extent at which the steel Sa193 B8m bolts conforms to the requirements of another grade for which that particular element is a specified element. The tensile property and hardness property requirements of the ASTM A193 Grade B8m Class 2 Bolts have been discussed in the specification. The tensile strength property requirements of the A193 B8m Cl2 has been highlighted by a full size fasteners, wedge tensile testing. Click on the given link for the A193 B8M Torque Chart

The ASTM A193 B8M specification fasteners such as the A193 B8m Stud Bolts are heavily utilized in industries like petroleum and chemical. The ASTM A193 B8m fasteners often find use in applications that involve the construction industry. Although, the ASTM A193 Gr B8m material is frequently available in national coarse or also referred to as UNC thread pitches, if the ASTM A193 B8m Class 1 Torque are being used in traditional applications, threads are specified in the ASTM A193 B8m Pdf mention 8 threads per inch  or tpi for those fasteners which have a diameter above one inch.

Fasteners from ASTM A193 B8m Class 1 are similar to Grade B8. But instead of being manufactured from AISI 304 grade stainless steel, the A193 B8 Class 1 has been produced from AISI 316 stainless steel grade. The Type 316 ASTM A193 B8m Class 2 Torque stainless offers superior resistance to corrosion as compared to grade 304 stainless steel. This is due to the added molybdenum content in ASTM A193 B8m Cl2. The addition of molybdenum in the A193 Grade B8 also improves resistance to pitting in chloride ion solutions. The A193 B8 Cl2 bolts demonstrate an increased tensile strength even at high temperatures.

ASTM A193 B8m Class 2 316 grade stainless steel is known to be effective in acidic environments. The use of A193 B8m grade of stainless steel proves highly effective in protecting the fasteners against corrosion caused by acids such as  sulfuric, acetic, hydrochloric,  formic, and tartaric, as well as acid sulfates and alkaline chlorides. The additional strain hardening operation performed on the A193 B8 Class 2 fasteners not only increases its tensile strength, but also can demonstrate the A193 B8m Class 2 Properties reduced susceptibility to galling.

A193 B8m Class 1 fasteners have been carbide solution treated, on the other hand A193 B8m Class 2 fasteners have been both carbide solution treated as well as strain hardened. The work hardening that occurs during the manufacturing  process of A193 B8m Cl.2 fasteners tends to increases their tensile strength. Typically, Sa193 B8m Class 2 fasteners are differentiated by a line under the grade symbol. This line under the grade will appear either on the heads of bolts or the ends of threaded rods. In this case, A193 Gr B8m Class 2 fasteners have been marked as B8MSH with the grade symbol being underlined.


ASTM A193 Bolts Studs Manufacturer Specifications

Specification Checklist ASTM A193 Grade B8m Class 2 Bolts
Type Of Threads: BSW And BSF & METRIC And UNC
Standard Dimensions Of: ISO 14585C/ DIN 7973C/ DIN 7983C/ ISO 2009/ ASME B18.3.1M/ ASME B18.6.3
Provide Multiple Payment Online Options? Yes
Different Types Of Head Pan/ Flat/ Oval/ Phillips/ Hex Head
Process Of Making Bolts And Nuts Heat Treatment/ Surface Plating/ Cold Heading/ Insert tapping/ Wire Drawing
Available Types Truss head/ Round/ Oval/ Hex Head/ Pan
Call, For Free Sample Nuts And Bolts (Some Pieces)
B8m Class 2 Bolts ISO And British Standard ISO 10642 And BS 57
Length Of Shoulder Bolts 3 millimeter to 200 millimeter
We provide Gr B8m Studs with good quality Ankleshwar, Bhopal, Dallas, Chennai, Baku, Madrid, Bogota, Ghaziabad, Nashik, Patna, Chandigarh, Shanghai, Coimbatore, Ludhiana, Sydney, Lagos, Batam, Bhubaneswar, Jamnagar, Al-Khobar, Ashburn, Tiruchirappalli, Vapi, Navi-Mumbai, Amsterdam, Guwahati, Ahmedabad, Hazira, Busan, Jakarta, Santiago, Lucknow, Calgary, Panipat, Visakhapatnam, Surabaya, Jaipur, New-Delhi, Surat, Houston, Puchong, Dubai, Sao-Paulo, Jamshedpur, Thane, Agra, Secunderabad, Kuala-Lumpur, Johor-Bahru, Hangzhou, London, Ajman, Milan, Vasai-Virar, Delhi, Cairo, Karachi, Kota, Bengaluru, Gurgaon, Al-Jubail, Kolkata, Sharjah, Bangkok, Pimpri-Chinchwad, Vung-Tau, Ho-Chi-Minh-City, Riyadh, Brisbane, Alexandria, Kochi, Jeddah, Seoul, Ambernath, Indore, Vadodara, Singapore, Dombivli, Doha, Mexico-City, Noida, Mumbai, Zhengzhou, Shah-Alam, Hanoi, Paris, Dammam, Kalyan, Oyama, Perth, Tehran, Rajkot, Raipur, Dhaka, Melbourne, Istanbul, Mysuru, Pune, Manama, Faridabad, Abu-Dhabi, Quezon-City, Chicago, Beijing, Hyderabad, Nagpur,

We Stock and Supplies ASME SA193 B8M Nuts as per international standards, See A193 B8M Bolt Torque Chart and Yield Strength.


Grade B8M Class 2 Threaded Rod Price List

Size Grade Material Type Of Product Price In INR Per KG
5/8 Unc A193 Grade B8m Class 2 Stainless Steel Threaded Rod 238.00
1 Unc A193 Grade B8m Class 2 Stainless Steel Threaded Rod 348.00
7/8 Unc A193 Grade B8m Class 2 Stainless Steel Threaded Rod 568.00
1-1/2 8 Unc A193 Grade B8m Class 2 Stainless Steel Threaded Rod 847.00
1-3/8 8 Unc A193 Grade B8m Class 2 Stainless Steel Threaded Rod 1220.00

One of India’s largest Manufacturer Of ASTM A193 Grade B8m Class 2 Bolts in India. For final ASME SA 193 B8m CL1 Studs Price List Please Call on +91(22) – 6743 8321 or drop an E-Mail : enquiry@siddhagirimetals.com.



A193 B8m Nut Chemical Properties

Element ASTM A193 Grade B7 Bolts ASTM A193 Grade B8M Bolts ASTM A193 Grade B8MM Bolts
Sulfur, maximum 0.040% 0.030% 0.030%
Molybdenum 0.15 - 0.25% 2.00 - 3.00%
Carbon 0.37 - 0.49% 0.08% maximum 0.08% maximum
Manganese 0.65 - 1.10% 2.00% maximum 2.00% maximum
Phosphorus, maximum 0.035% 0.045% 0.045%
Silicon 0.15 - 0.35% 1.00% maximum 1.00% maximum
Chromium 0.75 - 1.20% 18.0 - 20.0% 16.0 - 18.0%
Nickel 8.0 - 11.0% 10.0 - 14.0%

Compare A193 B8M Heavy Hex Bolts Price List, before buying A193 B8M Material, ASTM A193 B8m Pdf.

ASTM A193 B8m Class 2 Mechanical Properties

Grade Size Tensile ksi, minimum Yield, ksi, minimum Elong, %, minimum RA % minimum
ASTM A193 Grade B8MM Class 2 Stud Up to 3/4 110 95 15 45
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 Grade B8M Class 1 Hex Nut All 75 30 30 50
ASTM A193 Grade B7 Hex Nut Up to 2-1/2 125 105 16 50
2-5/8 - 4 115 95 16 50
4-1/8 - 7 100 75 18 50
ASTM A193 Grade B8M Class 2 Nut Up to 3/4 125 100 12 35
7/8 - 1 115 80 15 35
1-1/8 - 1-1/4 105 65 20 35
1-3/8 - 1-1/2 100 50 28 45
ASTM A193 Grade B8MM Class 1 Hex Bots All 75 30 30 50

ASME SA 193 B8m CL1 Studs Size Chart

Type Of ASTM A193 Grade B8m Class 2 Bolts Size Of B8m Class 2 Bolts Type Of Property Class Tensile And Yield Strength Standard Of ASTM A193 Grade B8M Class 2
ASTM A193 Grade B8m Class 2 Bolts/ Hex Nut/ Screws Threaded Rod/ Studs Metric 4 to Metric 80 10.9 1040N / mm2 minimum ISO 4014 (Half Thread) And ISO 4017 (Full Thread)

A trusted supplier & exporter of ASME SA193 B8M Bolts buy many Petrochemical, Oil & Gas companies.

ASTM A193 Grade B8m Class 2 Bolts Dimensions Formula

ASTM A193 Grade B8m Class 2 Bolts Dimensions Formula
Nominal Size Of (D)
Diameter Of Body
Thickness Of Head
Flats Across
Bolt Corners Across
(D) MAXIMUM
(D) MINIMUM
(H) MAXIMUM
(H) MINIMUM
(F) MAXIMUM
(F) MINIMUM
(C) MAXIMUM
(C) MINIMUM
Metric (M) 10
10.00
9.78
6.63
6.17
17.00
15.73
18.48
17.77
Metric (M) 12
12.00
11.73
7.76
4.24
19.00
17.73
20.78
20.03
Metric (M) 14
14.00
13.73
9.09
8.51
22.00
20.67
24.25
23.35
Metric (M) 16
16.00
15.73
10.32
9.68
24.00
23.67
27.71
26.75
Metric (M) 20
20.00
19.67
12.88
12.12
30.00
29.16
34.64
32.95
Metric (M) 24
24.00
23.67
15.44
14.56
36.00
35.00
41.57
39.55
Metric (M) 30
30.00
29.67
19.48
17.92
46.00
45.00
53.12
50.85
Metric (M) 36
36.00
35.61
23.38
21.63
55.00
53.80
63.51
60.79
Metric (M) 42
42.00
41.38
26.97
25.03
65.00
62.90
75.06
71.71
Metric (M) 48
48.00
47.38
31.07
28.93
75.00
72.60
86.60
82.76
Metric (M) 56
56.00
55.26
36.2
33.80
85.00
82.20
98.15
93.71
Metric (M) 64
64.00
63.26
41.32
38.68
95.00
91.80
109.70
104.65
Metric (M) 72
72.00
71.26
46.45
43.55
105.00
101.40
121.24
115.60
Metric (M) 80
80.00
79.26
51.58
48.42
115.00
111.00
132.72
126.54
Metric (M) 90
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

SA 193 Grade B8M Heavy Hex Bolts Dimensions with Tolerances

SA 193 Grade B8M Heavy Hex Bolts Dimensions with Tolerances
Diameter Of (D)
Body Diameter Of (D)
(F) Flat Across
© Corners Across
Height (H) Of Head
Lengths Of (T) Thread
(MAXIMUM)
(MINIMUM)
(MAXIMUM)
(MINIMUM)
(MAXIMUM)
(MINIMUM)
(MAXIMUM)
(MINIMUM)
< 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

Grade B8M Bolts Size Chart In MM

Normal Diameter PITCH In Millimeter Diameter In Millimeter Diameter In Inches Size Of Nuts
(Metric) M10 1.5 10 0.3937 17
(Metric) M12 1.75 12 0.4724 19
(Metric) M14 2 14 0.5512 22
(Metric) M16 2 16 0.6299 24
(Metric) M18 2.5 18 0.7087 27
(Metric) M20 2.5 20 0.7874 30
(Metric) M22 2.5 22 0.8661 32
(Metric) M24 3 24 0.9449 36
(Metric) M27 3 27 1.063 41
(Metric) M30 3.5 30 1.1811 46
(Metric) M33 3.5 33 1.2992 50
(Metric) M36 4 36 1.4173 55
(Metric) M39 4 39 1.5354 60
(Metric) M42 4.5 42 1.6535 65
(Metric) M45 4.5 45 1.7717 70
(Metric) M48 5 48 1.8898 75
(Metric) M52 5 52 2.0472 80
(Metric) M56 5.5 56 2.2047 85
(Metric) M60 5.5 60 2.3622 90
(Metric) M64 6 64 2.5197 95
(Metric) M68 6 68 2.6772 100
(Metric) M72 6 72 2.8346 105
(Metric) M76 6 76 2.9921 110
(Metric) M80 6 80 3.1496 115
(Metric) M85 6 85 3.3464 120
(Metric) M90 6 90 3.5433 130
(Metric) M100 6 100 3.937 145
(Metric) M110 6 110 4.3307 155
(Metric) M125 6 125 4.9212 180
(Metric) M140 6 140 5.5118 200
(Metric) M160 6 160 6.2992 230

ASTM A193 B8m Class 2 Torque Chart

Diameter Of Bolts
Torque Weight In LBS
Torques Of 30% Initial
Torques Of 70%
Torques Of 100% Final
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
1.1/8
127
297
424
1.1/4
179
417
596
1.3/8
186
435
622
1.1/2
246
574
821
1.9/16
168
392
560
1.5/8
191
445
636
1.3/4
240
561
801
1.7/8
298
696
994
2
366
853
1219
2.1/4
529
1234
1762
2.1/2
733
1709
2442
2.3/4
986
2300
3285
3
1289
3008
4297

A193 B8M Material Recommended Nuts And Washers

Grade Of Bolts Grade Of Nuts Grade Of Washers
ASTM A193 Grade B8M/ B8MA/ B8M2/ B8M3 ASTM A194 Grade 8M/ 8MA SS 316

SA193 B8m Fasteners Temperature Range

Specification Of Bolts
Type Of Grade
Temperature Ratings
650
700
750
800
850
900
950
1000
1050
1100
343
371
399
427
454
482
510
538
566
593
ASTM A193 Bolts
B6
21.2
21.2
21.2
19.5
15.6
12
ASTM A193 Bolts
B7(*)
ASTM A193 Bolts
B7M
25
25
23.6
21
17
12.5
8.5
4.5
ASTM A193 Bolts
(*)
20
20
20
18.5
16.2
12.5
8.5
4.5
ASTM A193 Bolts
B8-CL1
11.2
11
10.8
10.5
10.3
10.1
9.9
ASTM A193 Bolts
B8-CL2
25
ASTM A193 Bolts
(* *)
25
25
25
25
23.5
20.5
16
11
6.3
2.8
ASTM A193
B16
ASTM A320 Bolts
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 Bolts
660
20.2
20.1
20
19.9
19.9
19.9
19.8
19.8

Sa193 B8m Class 2 Stud Bolts Weight Chart

MM (Millimeter) THREADS AS PER IS 1363/ IS 1367
Asme Sa 193 B8 Cl2 Stud Approximate Weight In Kilogram For 100 Nos
Length Of ASTM A193 B8M Bolts Diameter Of Class 2 Bolts
Metric 5 Metric 6 Metric 8 Metric 10 Metric 12 Metric 14 Metric 16 Metric 18 Metric 20 Metric 22
16 mm (millimeter) 0.448 0.743 1.590 3.211
20 mm (millimeter) 0.598 0.812 1.711 3.411 4.892
25 mm (millimeter) 0.660 0.897 1.871 3.660 5.252 8.170
30 mm (millimeter) 0.737 1.010 2.070 3.912 5.574 9.690 10.707 18.657
35 mm (millimeter) 0.804 1.120 2.271 4.223 5.974 10.000 11.416 16.026 19.608
40 mm (millimeter) 0.881 1.230 2.470 4.533 6.410 10.288 12.107 16.667 20.747
45 mm (millimeter) 0.958 1.340 2.671 4.840 6.859 10.504 12.821 17.241 21.739
50 mm (millimeter) 1.030 1.450 2.870 5.155 7.299 11.261 13.624 17.857 22.727 28.409
55 mm (millimeter) 1.560 3.071 5.464 7.740 11.628 14.409 18.868 23.810 30.120
60 mm (millimeter) 1.670 3.270 5.774 8.183 12.255 15.244 20.000 25.126 32.051
65 mm (millimeter) 1.781 3.472 6.083 8.621 12.626 16.026 21.008 26.455 34.014
70 mm (millimeter) 1.890 3.671 6.394 9.058 12.987 16.835 22.124 27.778 35.461
75 mm (millimeter) 2.000 3.873 6.702 9.506 13.228 17.606 23.256 29.070 39.063
80 mm (millimeter) 2.111 4.072 7.013 10.000 13.889 18.248 24.510 30.303 40.000
90 mm (millimeter) 4.472 7.634 10.917 14.925 19.841 26.042 33.113 41.667
100 mm (millimeter) 4.873 8.251 11.820 16.340 21.459 27.778 35.714 46.296
110 mm (millimeter) 8.881 12.723 17.730 23.041 31.250 38.168 47.170
120 mm (millimeter) 9.506 13.624 18.797 24.631 32.895 40.984 50.000
130 mm (millimeter) 10.101 14.535 20.000 26.316 34.722 43.478 52.632
140 mm (millimeter) 10.707 15.432 20.833 27.933 35.461 46.296 55.556
150 mm (millimeter) 11.312 16.340 22.222 29.412 37.594 48.544 58.824
160 mm (millimeter) 11.905 17.241 24.272 31.056 40.984 50.505 61.728
170 mm (millimeter) 12.500 18.116 32.680 53.191 64.935
180 mm (millimeter) 13.123 19.011 26.882 34.247 55.556 67.568
190 mm (millimeter) 13.736 19.920 35.971 58.140 70.423
200 mm (millimeter) 14.327 20.833 29.586 37.594 49.020 60.976 73.529
220 mm (millimeter) 15.528 22.624 40.650 65.789 79.365
240 mm (millimeter) 16.722 24.510 43.860 71.429 84.746
250 mm (millimeter) 17.301 25.381 45.455 74.627 87.719
260 mm (millimeter) 17.921 26.316 47.170 76.923 90.909
280 mm (millimeter) 19.157 28.090 50.505 81.967 98.039
300 mm (millimeter) 20.325 29.940 53.763 87.719 104.167
320 mm (millimeter) 31.646 56.818 92.593
340 mm (millimeter) 33.557 60.241 98.039
360 mm (millimeter) 35.211 63.291 104.167
380 mm (millimeter) 37.037 66.667 108.696
400 mm (millimeter) 39.063 69.444 113.636

ASME SA193 B8M Nuts Weight Chart

Size Of ASTM A193 Grade B8m Class 2 Nuts Hex Nut Finished Heavy Hex Nuts Jam Nut Finished Heavy Hex Jam Nuts Square Nut Heavy Square Nuts
1/2″ Nuts 3.75 6.54 2.62 4.00 5.78 7.87
5/8″ Nuts 7.33 11.9 4.93 6.96 10.8 14.3
3/4″ Nuts 11.9 19.3 7.70 11.0 15.4 23.5
7/8″ Nuts 19.0 29.7 12.0 16.7 24.5 36.2
1″ Nuts 28.3 42.5 17.6 23.5 36.3 51.5
11/8″ Nuts 40.3 59.2 24.7 32.4 52.5 72.4
11/4″ Nuts 54.3 78.6 36.1 45.8 70.6 95.5
13/8″ Nuts 73.0 102 47.9 59.3 94.5 125.0
11/2″ Nuts 94.3 131 60.9 74.8 122 161
15/8″ Nuts 162 91.6
13/4″ Nuts 151 204 100 114
17/8″ Nuts 241 134
2″ Nuts 224 299 140 165
21/4″ Nuts 419 227
21/2″ Nuts 564 332
23/4″ Nuts 738 429
3″ Nuts 950 545
31/4″ Nuts 1194 651
31/2″ Nuts 1526 851
33/4″ Nuts 1812 1005
4″ Nuts 2180 1200

One Of The Nation's Largest Distributor And Manufacturer Of ASTM A193 Grade B8m Class 2 Bolts

ASTM A193 Grade B8m Socket Head Screws
ASTM A193 Grade B8m Socket Head Screws
ASTM A193 Gr B8m Washers
ASTM A193 Gr B8m Washers
Stainless Steel Grade B8m Nuts
Stainless Steel Grade B8m Nuts
ASTM A193 B8m Class 2 Machine Screws
ASTM A193 B8m Class 2 Machine Screws
ASTM A193 Bolts Studs
ASTM A193 Bolts Studs
ASME SA193 B8m Class 1 Threaded Rod
ASME SA193 B8m Class 1 Threaded Rod

Know The Delivery Strength Of Your Supplier First

France, Europe, Thailand, Qatar ASTM a193 b8M hex bolt
Indonesia, Philippines, Belgium, Dammam -KSA ASTM A193 Grade B8M Class 2 Bolts
USA, Bangladesh, Finland, Malaysia A193 Grade B8M Class 2 Screws
Germany, Thailand, Malaysia, Czechia Grade B8M CL 2 Studs
South Africa, Singapore, Singapore, Bahrain A193 Grade B8M Class 2 Threaded Rod
Saudi Arabia (KSA), Kuwait, Brazil, South Africa Asme Sa 193 B8 Cl2 Stud
Malaysia, Hong Kong, UAE, Oman ASTM A193 Bolts Studs and Rods
Australia, UK, Nigeria, Philippines ASTM A193 B8M Bolts
Turkey, Norway, Malaysia, United Arab Emirates (UAE) Astm A193 B8m Fasteners
Italy, Iran, Singapore, Chile A193 Gr B8m Threaded Rod
Malaysia, Russia, Dubai, Netherlands A193 B8M Lag Bolts
Europe, Malaysia, UAE, United Kingdom -UK ASTM A193 B8M Nyloc Nuts