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ASTM A193 Grade B8M Bolts

SA 193 Gr B8M class 1 Threaded Rod Manufacturer in Mumbai, India, Check Gr B8M Cl2 Threaded Rod Price List

Great Steel & Metals is a manufacturer and supplier of different types of stainless steel products. We produce and supply pipes, bars, rods, plates, bolts and nuts. We offer different grades of bolts and nuts with different materials. Our ASTM A193 Gr B8m Bolt belongs to the A193 material which is a specification for bolts and nuts.

ASTM A193 Grade B8m Bolts

ASTM A193 Grade B8m Bolts

SA 193 Gr B8m Class 1 Threaded Rod

SA 193 Gr B8m Class 1 Threaded Rod

ASTM A193 Gr B8m Studs

ASTM A193 Gr B8m Studs


ASTM A193 Gr B8M studs, B8M Stainless Steel Nuts, view Steel A193 Grade B8M Stud Bolt Price in India

This material has different grades such as the B5, B6, B7 and B8. These grades have specifications and variations as well. The B8M is a variation of the grade B8. There are classes within the grades as well. The ASTM A193 Class 2 Grade B8m Bolts belong to class 2 of the B8M grade. This grade is manufactured from 316 material opposed to the B8 which is manufactured from 304 material. Therefore, the ASTM A193 Grade B8m Threaded Rod is much corrosion resistant than its B8 counterpart.

Steel ASTM A193 Grade B8M Screw, A193 B8M Fasteners, Steel B8M Grade Hanger Bolt, Check ASME SA 193 B8M Stud Price List

What is ASTM A193 Grade B8m Bolts?

The material has added molybdenum to bring this mechanical property. There are two classes in this grade. The ASTM A193 Gr B8m Studs of class 2 are stronger than class 1 because class 2 undergoes an additional strain harderning operation to bring the extra strength. The Stud Bolt ASTM A193 Gr B8m can be used in high temperature applications. The ASTM A193 Gr B8m Nut is used in highly corrosive environments such as the seawater applications. The B8m Bolts And Nuts in general can be used in heat exchangers, chemical operations and in sea water because of the strength and corrosion resistance properties.


Specification Format of SA 193 Gr B8M Class 1 Threaded Rod

Material
Specification
Standards
Size
Length

ASTM A193 B8M Fasteners

IS

BS

ASTM

DIN, ISO, JIS, GB, IS, BS, ASTM

M 02 to M 160

3 mm to 200 m


Related ASTM Specifications

  • ASTM A1014 / A1014M – 16 : Specifications for Precipitation-Hardening Bolting (UNS N07718) for High Temperature Service
  • ASTM A962 / A962M – 16a : Specifications for Common Requirements for Bolting Intended for Use at Any Temperature from Cryogenic to the Creep Range
  • ASTM A638 / A638M : Specifications for Precipitation Hardening Iron Base Superalloy Bars, Forgings, and Forging Stock for High-Temperature Service
  • ASTM A193 / A193M – 16 : Specifications for High-Temperature Bolting, with Expansion Coefficients Comparable to Austenitic Stainless Steels
  • ASTM A1082 / A1082M – 16 : Specifications for High Strength Precipitation Hardening and Duplex Stainless Steel Bolting for Special Purpose Applications
  • ASTM F2281 : Specifications for Stainless Steel and Nickel Alloy Bolts, Hex Cap Screws, and Studs, for Heat Resistance and High Temperature Applications Designation

Most Commonly Used ASTM A193 Grade B8M Bolts Types

Steel A193 Grade B8m Bolts and Set Screws

ASTM A193 Grade B8m Hex Bolts

ASTM A193 Grade B8m Hex Bolts

Steel A193 Grade B8m Hex Set Screws

Steel A193 Grade B8m Hex Set Screws

Steel ASTM A193 Grade B8m Carriage Bolts

Steel ASTM A193 Grade B8m Carriage Bolts

ASTM A193 Grade B8m Stainless Steel Roofing Bolts

ASTM A193 Grade B8m Stainless Steel Roofing Bolts

Steel ASTM A193 Grade B8m Socket Head Screws

Steel A193 Grade B8m Socket Head Cap Screws

Steel A193 Grade B8m Socket Head Cap Screws

ASTM A193 Grade B8m Low Head Socket Head Cap Screws

ASTM A193 Grade B8m Low Head Socket Head Cap Screws

Steel ASTM A193 Grade B8m Button Head Sockets

Steel ASTM A193 Grade B8m Button Head Sockets

ASTM A193 Grade B8m Stainless Steel Countersunk Sockets

ASTM A193 Grade B8m Stainless Steel Countersunk Sockets

A193 Gr B8m Socket Set Screws

A193 Gr B8m Socket Set Screws

Stainless Steel Grade B8m Socket Shoulder Screws

Stainless Steel Grade B8m Socket Shoulder Screws

A193 B8m Metric Socket Head Cap Screws

A193 B8m Metric Socket Head Cap Screws

ASTM A193 B8m Stainless Steel UNC Socket Head Cap Screws

ASTM A193 B8m Stainless Steel UNC Socket Head Cap Screws

ASTM A193 Grade B8m Stainless Steel Nuts

ASTM A193 Grade B8m T Nuts

ASTM A193 Grade B8m T Nuts

Steel A193 Grade B8m Wing Nuts

Steel A193 Grade B8m Wing Nuts

Steel ASTM A193 Grade B8m Lock Nuts

Steel ASTM A193 Grade B8m Lock Nuts

ASTM A193 Grade B8m Stainless Steel Dome Nuts (Acorn)

ASTM A193 Grade B8m Stainless Steel Dome Nuts (Acorn)

A193 Gr B8m Hex Nuts

A193 Gr B8m Hex Nuts

Stainless Steel Grade B8m Lug Nuts

Stainless Steel Grade B8m Lug Nuts

A193 B8m Square Nuts

A193 B8m Square Nuts

ASTM A193 B8m Stainless Steel Flange Nuts

ASTM A193 B8m Stainless Steel Flange Nuts

A193 Gr B8m Washers

ASTM A193 Grade B8m Stainless Steel Flat Washers

ASTM A193 Grade B8m Stainless Steel Flat Washers

ASTM A193 Grade B8m Penny Washers

ASTM A193 Grade B8m Penny Washers

Steel A193 Grade B8m Spring Washers

Steel A193 Grade B8m Spring Washers

Stainless Steel Grade B8m Toothed/ Serrated Lock Washers

Stainless Steel Grade B8m Toothed/ Serrated Lock Washers

Stainless Steel Grade B8m Threaded Rod

A193 Gr B8m Metric Threaded Rod

A193 Gr B8m Metric Threaded Rod

ASTM A193 B8m Stainless Steel UNC Threaded Rod

ASTM A193 B8m Stainless Steel UNC Threaded Rod

Steel A193 Grade B8m UNF Threaded Rod

Steel A193 Grade B8m UNF Threaded Rod

ASTM A193 Grade B8m BSW / BSF Threaded Rod

ASTM A193 Grade B8m BSW / BSF Threaded Rod

A193 B8m Machine Screws

ASTM A193 Grade B8m Pan Head Pozi

ASTM A193 Grade B8m Pan Head Pozi

Stainless Steel Grade B8m Pan Head Phillips

Stainless Steel Grade B8m Pan Head Phillips

A193 Grade B8m Pan Head Slotted

A193 Grade B8m Pan Head Slotted

Steel B8m Grade Pan Head Torx

Steel B8m Grade Pan Head Torx

ASTM A193 B8m Stainless Steel Self Tapping Screws

Stainless Steel Grade B8m Pan Head Pozi Self Tapping Screws

Stainless Steel Grade B8m Pan Head Pozi Self Tapping Screws

ASTM A193 Grade B8m Pan Head Slot Self Tapping Screws

ASTM A193 Grade B8m Pan Head Slot Self Tapping Screws

Steel A193 Grade B8m Countersunk Head Pozi Self Tapping Screws

Steel A193 Grade B8m Countersunk Head Pozi Self Tapping Screws

ASTM A193 Grade B8m Stainless Steel Countersunk Head Slotted Self Tapping Screws

ASTM A193 Grade B8m Stainless Steel Countersunk Head Slotted Self Tapping Screws

A193 Grade B8m Self Drilling Screws

ASTM A193 Grade B8m Z Purlin

ASTM A193 Grade B8m Z Purlin

ASTM A193 Grade B8m Stainless Steel Stitcher

ASTM A193 Grade B8m Stainless Steel Stitcher

Steel A193 Grade B8m Hot Rolled Rail

Steel A193 Grade B8m Hot Rolled Rail

Steel ASTM A193 Grade B8m Timber Fixing

Steel ASTM A193 Grade B8m Timber Fixing

Steel B8m Grade Coach Screws, Hex Head

ASTM A193 Grade B8m Coach Screw

ASTM A193 Grade B8m Coach Screw

ASTM A193 Grade B8m Stainless Steel Hex Head Coach Screw

ASTM A193 Grade B8m Stainless Steel Hex Head Coach Screw

Steel A193 Grade B8m DIN 571 Coach Screw

Steel A193 Grade B8m DIN 571 Coach Screw

A193 Gr B8m M10 Coach Screw

A193 Gr B8m M10 Coach Screw

B8m Security Fasteners

Steel A193 Grade B8m 2-Hole

Steel A193 Grade B8m 2-Hole

ASTM A193 Grade B8m 6-Lobe Pin

ASTM A193 Grade B8m 6-Lobe Pin

Steel ASTM A193 Grade B8m Barrel Nut

Steel ASTM A193 Grade B8m Barrel Nut

A193 Gr B8m Self Drilling Screw

A193 Gr B8m Self Drilling Screw

SS ASTM A193 B8m Petrochemical Studding & Nuts

ASTM A193 Grade B8m Studs

ASTM A193 Grade B8m Studs

Steel A193 Grade B8m Imperial Studs

Steel A193 Grade B8m Imperial Studs

Steel ASTM A193 Grade B8m Metric Studs

Steel ASTM A193 Grade B8m Metric Studs

ASTM A193 Grade B8m Stainless Steel Heavy Hex Nuts

ASTM A193 Grade B8m Stainless Steel Heavy Hex Nuts

ASTM A193 B8m U Bolts

ASTM A193 Grade B8m U Bolt c/w 2 Nuts

ASTM A193 Grade B8m U Bolt c/w 2 Nuts

Long Leg Steel ASTM A193 Grade B8m U Bolt c/w 4 Nuts

Long Leg Steel ASTM A193 Grade B8m U Bolt c/w 4 Nuts

ASTM A193 Grade B8m Stainless Steel U Bolt with Plate

ASTM A193 Grade B8m Stainless Steel U Bolt with Plate

Clamping U Steel A193 Grade B8m Bolts

Clamping U Steel A193 Grade B8m Bolts

ASME SA 193 B8m Anchor Bolt

ASTM A193 Grade B8m Wedge Anchor Bolts

ASTM A193 Grade B8m Wedge Anchor Bolts

Steel A193 Grade B8m Expansion Anchor Bolt

Steel A193 Grade B8m Expansion Anchor Bolt

Steel ASTM A193 Grade B8m Sleeve Anchor Bolt

Steel ASTM A193 Grade B8m Sleeve Anchor Bolt

ASTM A193 Grade B8m Stainless Steel Concrete Anchor Bolt

ASTM A193 Grade B8m Stainless Steel Concrete Anchor Bolt

Grade B8m Rivets

ASTM A193 Grade B8m POP Rivets (Open End)

ASTM A193 Grade B8m POP Rivets (Open End)

Steel A193 Grade B8m Closed End POP Rivets (Sealed)

Steel A193 Grade B8m Closed End POP Rivets (Sealed)

Steel ASTM A193 Grade B8m Large Flange POP Rivets

Steel ASTM A193 Grade B8m Large Flange POP Rivets

ASTM A193 Grade B8m Stainless Steel Countersunk POP Rivets

ASTM A193 Grade B8m Stainless Steel Countersunk POP Rivets

ASME SA193 Grade B8m Inserts

ASTM A193 Grade B8m Unthreaded Rod

ASTM A193 Grade B8m Unthreaded Rod

Steel ASTM A193 Grade B8m E-Z Lok Threaded Inserts

Steel ASTM A193 Grade B8m E-Z Lok Threaded Inserts

ASTM A193 Grade B8m Stainless Steel Dowel Pins

ASTM A193 Grade B8m Stainless Steel Dowel Pins


ASTM A193 B8M Hex Bolt Dimension


ASTM A193 B8M 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

Dimensions Of A193 B8M Heavy Hex Bolts

ASTM A193 B8M 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.

B8M Stainless Steel Nuts Sizes Chart

ASTM A193 Grade B8m Screws Types SIZE GRADE ASME ISO ASTM
Steel A193 Grade B8m Socket Head Cap Screws M1.6 to M64 12.9 B18.3.1 M 4762 A574M
Steel ASTM A193 Grade B8m Socket Low Head Cap Screws M4 to M20 10.9
ASTM A193 Grade B8m Stainless Steel Socket Head Shoulder Screws M6 to M24 012.9 B18.3.3M
A193 Gr B8m Countersunk Socket Head Screws M3 to M20 012.9 B18.3.5M 10642 F835M
Stainless Steel Grade B8m Button Head Socket Screws M3 to M12 012.9 B18.3.4M 7380 F835M
A193 B8m Flange Button Head Socket Screws M3 to M10 012.9 F835M
A193 Grade B8m Knurled Point Socket Set Screws M3 to M20 45H B18.3.6M 4029 F912M
Steel B8m Grade Flat Point Socket Set Screws M6 to M12 45H B18.3.6M 4026 F912M
ASTM A193 B8m Stainless Steel Dog Point Socket Set Screws M3 to M20 45H B18.3.6M 4028 F912M
B8m Cone Point Socket Set Screws M3 to M12 45H B18.3.6M 4027 F912M
SS ASTM A193 B8m Plain Point Socket Set Screws M3 to M20 45H B18.3.6M 4029 F912M
ASTM A193 B8m Taper Pressure Plug M8 to M22

ASTM A193 Grade B8m Nuts Type SIZE PROPERTY CLASS STANDARD
Steel A193 Grade B8m Hex Nut M6 to M42 10 ISO 4032
Steel ASTM A193 Grade B8m Nylock Nut M6 to M20 (Gr.8)
M10 to M24 (Gr.10)
8 & `10 DIN 982
ASTM A193 Grade B8m Stainless Steel Nylock Nut M6 to M20 (Gr.8)
M10 to M24 (Gr.10)
8 & 10 DIN 985
A193 Gr B8m Hex Weld Nut M6 to M12 8 DIN 929

ASTM A193 Grade B8m Washers Type SIZE (in mm) HARDNESS STANDARD
Square Section Steel A193 Grade B8m Spring Washer 3 to 39 HV (430 to 530) DIN 7980
Flat Section Steel ASTM A193 Grade B8m Spring Washer 3 to 39 HV (430 to 530) DIN 127 B
ASTM A193 Grade B8m Stainless Steel Hardened Washer 12 to 30 HV (300 to 370) IS 2016
A193 Gr B8m Hardened Washer 12 to 56 Rockwell 26 to 45 (HDG)
Rockwell 38 to 45 (Coated)
ASTM F436M

SS ASTM A193 B8m Bolt Type SIZE PROPERTY CLASS TENSILE STRENGTH STANDARD
ASTM A193 Grade B8m Hex Head Bolt / Screws M4 to M80 10.9 1040N / mm2 min ISO 4017 (Full Thread)
ISO 4014 (Half Thread)

Below table compares various Steel ASTM A193 Grade B8m Fasteners metric sizes to the closest inch equivalent

Metric ASTM A193 Grade B8m Bolts Closest Inch
M1.4-0.3 Bolts 0-80 (L)
M2-0.4 Bolts 1-64 (S)
M2.5-0.45 Bolts 3-56 (L)
M3-0.5 Bolts 4-48 (S)
M3.5-0.6 Bolts 6-40 (Same)
M4-0.7 Bolts 8-36 (L)
M5-0.8 Bolts 10-32 (S)
M6-1.0 Bolts 1/4-28 (L)
M7-1.0 Bolts 1/4-28 (S)
M8-1.25 Bolts 5/16-18 (S)
M10-1.5 Bolts 3/8-16 (S)
M12-1.75 Bolts 1/2-13 (L)
M14-2.0 Bolts 9/16-12 (L)
M16-2.0 Bolts 5/8-11 (S)
M18-2.5 Bolts 3/4-10 (L)
M20-2.5 Bolts 3/4-10 (S)
M22-2.5 Bolts 7/8-9 (L)
M24-3.0 Bolts 1-8 (L)
M30-3.5 Bolts 1 1/8-7 (S)
M36-4.0 Bolts 1 3/8-6 (S)

*L = Larger
*S=Smaller


Steel B8M Grade Hanger Bolt Torque Calculation

Steel A193 Grade B8m Bolts Nominal Diameter (in) Threads (in) Torque ft-lb (Dry) Torque ft-lb (Lubricated)
1/4″ 20 6.5 4.8
28 7.4 5.5
5/16″ 18 13.2 10.0
24 14.7 11.0
3/8″ 16 23.5 17.7
24 26.6 19.9
7/16″ 16 37.6 28.2
24 42.0 31.5
1/2″ 13 57.4 43.0
20 64.7 48.5
9/16″ 12 82.7 62.1
18 92.3 69.2
5/8″ 11 114.2 85.7
18 129.3 97.0
3/4″ 10 203 152
16 226 170
7/8″ 9 326 245
14 361 270
1″ 8 490 368
14 549 412
1-1/4″ 7 853 639
12 944 708
1-1/2″ 6 1484 639
12 1669 1252

Steel A193 Grade B8m Bolts Nominal Diameter (in) Threads (in) Torque ft-lb (Dry) Torque ft-lb (Lubricated)
1/4″ 20 7.4 5.5
28 8.4 6.3
5/16″ 18 15.1 11.4
24 16.8 12.6
3/8″ 16 26.9 20.2
24 30.4 22.8
7/16″ 14 43.0 32.3
20 48.0 36.0
1/2″ 13 65.6 49.1
20 73.9 55.4
9/16″ 12 94.5 71.0
18 105.5 79.1
5/8″ 11 130.5 97.9
18 147.8 110.9
3/4″ 10 232 174
16 258 194
7/8″ 9 373 280
14 412 309
1″ 8 560 420
14 628 471
1-1/4″ 7 975 730
12 1079 809
1-1/2″ 6 1696 1271
12 1908 1430

High strength Grade B8M Double Ended Stud. Buy directly from ASME SA193 Grade B8M Tie Rod, A193 Grade B8M Elevstor Bolt, A193 Gr B8M Bolt, Check Stainless Steel Grade B8M Hex Head Bolt Dimension

ASTM A193 Grade B8M Tie Bar stockist in Mumbai, India, ASME SA193 Gr B8M Hex Screw, SS ASTM A193 B8M Stud Bolts, ASTM A193 Grade B8M Stainless Steel Heavy Hex Bolt. Factory price if you buy bulk ASTM A193 B8M Stainless Steel Double Ended Studs cut to size, ASTM A193 Grade B8M Alloy Steel Threaded Bars manufacturers in India.


A193 Gr B8m Fasteners (Nut Bolts Screw Washer) DIN and ISO designations

ASTM A193 Grade B8m Bolts DIN No. Description
84 Slotted Cheese Head Machine Screws
85 Slotted Pan Head Machine Screws
94 Cotter Pin
125A Flat Washer (without Chamfer)
125B Flat Washer (with Chamfer)
127B Split Lock Washer
137B Spring Wave Washer
315 Wing Nut
439B Machine Screws Hex Nut, Finished Hex Jam Nut
911 Long Arm Hex Key
912 Hex Socket Head Cap Screws
916 Hex Socket Set Screws
931 Hex Head Cap Screws Partially Threaded
933 Hex Head Cap Screws Fully Threaded
934 Finished Hex Nut
939 Double End Stud
960 Hex Head Cap Screws Partially Threaded
961 Hex Head Cap Screws Fully Threaded
963 Slotted Flat Head Machine Screws
964 Slotted Oval Head Machine Screws
965 Phillips Flat 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
6797A External Tooth Lock Washer
6797J Internal Tooth Lock Washer
6912 Hex Low Socket Head Cap Screws
6921 Hex Flange Head Screws
6923 Hex Flange Nut
ISO 7379 Hex Socket Head Shoulder Screws
ISO 7380 Hex Button Socket Head Cap Screws
7985 Phillips Pan Head Machine Screws
7991 Hex Flat Socket Head Cap Screws

ANSI / ASME Standards for ASTM A193 Grade B8m Bolts (inch series)

B18.1.1 Small Solid Rivets B18.8.1 Clevis Pins and Cotter Pins
B18.1.2 Large Rivets B18.8.2 Taper Pins, Dowel Pins, Straight Pins, Grooved Pins and Spring Pins
B18.2.1 Square and Hex Bolts and Screws B18.9 Plow Bolts
B18.2.2 Square and Hex Nuts B18.10 Track Bolts and Nuts
B18.2.6 Fasteners for use in Structural Applications B18.11 Miniature Screws
B18.3 Socket Cap, Shoulder and Set Screws B18.13 Screws and Washer Assemblies (Sems)
B18.5 Round Head Bolts B18.15 Forged Eyebolts
B18.6.2 Slotted Head Cap Screws, Square Head Set Screws, and Slotted Headless Set Screws B18.17 Wing Nuts, Thumb Screws and Wing Screws
B18.6.3 Machine Screws and Machine Screws Nuts B18.21.1 Lock Washers
B18.6.4 Thread Forming and Thread Cutting Tapping Screws and Metallic Drive Screws B18.22.1 Plain Washers
B18.7 General Purpose Semi- Tubular Rivets, Full Tubular Rivets, Split Rivets and Rivet Caps B18.23.1 Beveled Washers

Working Temperatures of ASTM A193 B8M Bolt Materials

MATERIAL
TEMPERATURE °C ( °F )
MIN.
MAX.
CARBON STEEL
-29 (-20)
300 (572)
B7, L7
-73 (-100)
400 (752)
B6
0 (32)
500 (932)
B8
-200 (-325)
575 (1067)
B16
0 (32)
520 (968)
B17B
-29 (-20)
650 (1202)
INC 718
0 (32)
750 (1382)
660
-29 (20)
538 (1000)

Temperature Range of A193 B8m

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
B6
21.2
21.2
21.2
19.5
15.6
12
B7(*)
B7M
25
25
23.6
21
17
12.5
8.5
4.5
(*)
20
20
20
18.5
16.2
12.5
8.5
4.5
B8-CL1
11.2
11
10.8
10.5
10.3
10.1
9.9
B8-CL2
25
(* *)
25
25
25
25
23.5
20.5
16
11
6.3
2.8
B16
L7
25
25
B17B
20
19.8
19.8
19.8
19.7
19.7
19.6
19.4
19.3
16.6
660
20.2
20.1
20
19.9
19.9
19.9
19.8
19.8

Steel A193 Grade B8M Stud Bolt Mechanical Properties Tensile Strength

Grade
Size
Tensile ksi, min
Yield, ksi, min
Elong, %, min
RA % min
HBW
HRC
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

Chemical Element of Steel ASTM A193 Grade B8M Screw

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%