background

ASTM A193 B8 Bolts

Grade B8 Class 2 studs, A193 B8 Threaded Rod Manufacturer in Mumbai

Great Steel & Metals is a manufacturer and supplier of stainless steel bolts, nuts and other fasteners. We offer the best products out of different material. Our ASTM A193 B8 Stud Bolts are one of a kind because of the specificity of the material. This material comes in different grades such as the B5, B6, B7 and B8. Each of them has their own variations as well.

ASTM A193 B8 Bolts

ASTM A193 B8 Bolts

Grade B8 Class 2 Studs

Grade B8 Class 2 Studs

ASTM A193 B8 Threaded Rod

ASTM A193 B8 Threaded Rod


Buy B8 Hex Nuts and ASTM A193 Grade b8 Hex Screw at low price in India.

The ASTM A193 Grade B8 Bolts are used in high temperature and high corrosion environments such as chemical processing plants and in power generation plants. The ASTM A193 B8 Class 2 Bolts are used in heat exchangers as well. They could be used in high corrosive environments such as marine industries, dyeing industries and mining industries. The ASTM A193 B8 Nuts are stronger and harder and do not wear off quickly.

What is ASTM A193 B8 Bolts?

The grade B8 has two classes. class 2 is stronger than class 1. The class 2 has higher HBW at 321 max and lower HRC at 35 max. These properties allow these two classes to be used uniquely with unique applications. The ASTM A193 B8 Studs can be used along with ASTM A193 B8 Threaded Rod in high heat applications because they are heated and water quenched to provide maximum corrosion resistance and strength. Our B8 Hex Nut is used with tight connections where strength is more important. All our products are of high quality and we test them prior to shipping. You can submit your inquiries and we will be in contact with all the details you want.


Specification Schedule of Grade B8 Class 2 studs

Check Steel A193 Grade b8 Stud Bolts, A193 Gr b8 Double Ended Studs & ASTM A193 Grade b8 Threaded Bars Updated 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

Standards Designation
ASTM A193 B8: Class 1 Stainless Steel, AISI 304, Carbide Solution Treated.

Raw Material of ASTM A193 Grade B8

Grade Tensile Class Raw Material Description
B8 Class 1 AISI 304 Stainless Steel, Carbide Solution Treated
B8 Class 2 AISI 304 Stainless Steel, Carbide Solution Treated and Strain Hardened

Basic Types Of A193 B8 Threaded Ro

Ready Stock of ASTM A193 b8 Stud Bolts, ASME SA 193 b8 Threaded Rod, ASTM A193 b8 Double Ended Stud & ASTM A193 Grade b8 Alloy Steel Screw in Mumbai
ASTM A193 Gr B8 Stainless Steel Heavy Hex Bolt And Nut

ASTM A193 Gr B8 Stainless Steel Heavy Hex Bolt And Nut

ASTM A193 B8 Stud Bolts

ASTM A193 B8 Stud Bolts

Astm A193 B8 Stud Bolt Thread Rod

Astm A193 B8 Stud Bolt Thread Rod

ASTM A193 grade b8 thread rod stud bolt

ASTM A193 grade b8 thread rod stud bolt

Stainless Steel Heavy Hex bolts ASTM A193 B8

Stainless Steel Heavy Hex bolts ASTM A193 B8

ASTM A193 B8 stud bolt and nut

ASTM A193 B8 stud bolt and nut

ASTM A193 B8 Hex Bolt Stud

ASTM A193 B8 Hex Bolt Stud

A193 B8 L7 PTFE Stud bolt

A193 B8 L7 PTFE Stud bolt

Standard ASTM A193 B8 2h stud bolts and nuts

Standard ASTM A193 B8 2h stud bolts and nuts

Astm A193 B8 Plain Threaded Stud Bolt

Astm A193 B8 Plain Threaded Stud Bolt

ASTM A193 B8 half thread hexagon bolt

ASTM A193 B8 half thread hexagon bolt

DIN975 B8 stud bolt round rod bar

DIN975 B8 stud bolt round rod bar

Grade 10.9 stainless steel stud bolt astm a193 gr B8 M20

Grade 10.9 stainless steel stud bolt astm a193 gr B8 M20

ASTM A193 B8 m8 stud bolt

ASTM A193 B8 m8 stud bolt

Galvanized Astm A193 B8 Threaded Bolts

Galvanized Astm A193 B8 Threaded Bolts

Grade 10.9 Galvanized ASTM A193 B8 Stud Bolt

Grade 10.9 Galvanized ASTM A193 B8 Stud Bolt

stainless steel b8 stud bolt astm a193

stainless steel b8 stud bolt astm a193

Plain ASTM A193 B8 heavy hex bolts and nuts

Plain ASTM A193 B8 heavy hex bolts and nuts

Steel Astm A193 Grade B8 Stud Bolts M28 M32 Nut Hex Cap Bolt

Steel Astm A193 Grade B8 Stud Bolts M28 M32 Nut Hex Cap Bolt

B8 ASTM A193 M16 stainless steel galvanized double tap end stud bolt

B8 ASTM A193 M16 stainless steel galvanized double tap end stud bolt


B8 Hex nuts Size Specification

ASTM A193 Grade b8 Stainless Steel Screws Types SIZE GRADE ASME ISO ASTM
A193 Grade b8 Socket Head Cap Screws M1.6 to M64 12.9 B18.3.1 M 4762 A574M
ASTM A193 b8 Stainless Steel Socket Low Head Cap Screws M4 to M20 10.9
A193 Gr b8 Socket Head Shoulder Screws M6 to M24 012.9 B18.3.3M
Stainless Steel Grade b8 Countersunk Socket Head Screws M3 to M20 012.9 B18.3.5M 10642 F835M
ASTM A193 Grade b8 Button Head Socket Screws M3 to M12 012.9 B18.3.4M 7380 F835M
Steel A193 Grade b8 Flange Button Head Socket Screws M3 to M10 012.9 F835M
A193 b8 Knurled Point Socket Set Screws M3 to M20 45H B18.3.6M 4029 F912M
Steel b8 Grade Flat Point Socket Set Screws M6 to M12 45H B18.3.6M 4026 F912M
Steel ASTM A193 Grade b8 Dog Point Socket Set Screws M3 to M20 45H B18.3.6M 4028 F912M
ASME Sa 193 b8 Cone Point Socket Set Screws M3 to M12 45H B18.3.6M 4027 F912M
Grade b8 Plain Point Socket Set Screws M3 to M20 45H B18.3.6M 4029 F912M
ASME Sa193 Grade b8 Taper Pressure Plug M8 to M22

ASTM A193 Grade b8 Stainless Steel Nuts Type SIZE PROPERTY CLASS STANDARD
A193 Grade b8 Hex Nut M6 to M42 10 ISO 4032
ASTM A193 b8 Stainless Steel Nylock Nut M6 to M20 (Gr.8)
M10 to M24 (Gr.10)
8 & `10 DIN 982
A193 Gr b8 Nylock Nut M6 to M20 (Gr.8)
M10 to M24 (Gr.10)
8 & 10 DIN 985
Stainless Steel Grade b8 Hex Weld Nut M6 to M12 8 DIN 929

ASTM A193 Grade b8 Stainless Steel Washers Type SIZE (in mm) HARDNESS STANDARD
Square Section A193 Grade b8 Spring Washer 3 to 39 HV (430 to 530) DIN 7980
Flat Section ASTM A193 b8 Stainless Steel Spring Washer 3 to 39 HV (430 to 530) DIN 127 B
A193 Gr b8 Hardened Washer 12 to 30 HV (300 to 370) IS 2016
Stainless Steel Grade b8 Hardened Washer 12 to 56 Rockwell 26 to 45 (HDG)
Rockwell 38 to 45 (Coated)
ASTM F436M

Grade b8 Bolt Type SIZE PROPERTY CLASS TENSILE STRENGTH STANDARD
ASTM A193 Grade b8 Stainless Steel Hex Head Bolt / Screws M4 to M80 10.9 1040N / mm2 min ISO 4017 (Full Thread)
ISO 4014 (Half Thread)

equivalent of ASTM A193 b8 Stainless Steel Fasteners metric sizes to the closest inch

Metric ASTM A193 B8 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


ASTM A193 Grade b8 Hex Screw Chemical Formula

Grade Tensile Class Raw Material Description
B8 Class 1 AISI 304 Stainless Steel, Carbide Solution Treated
B8 Class 2 AISI 304 Stainless Steel, Carbide Solution Treated and Strain Hardened

Property Classes of Steel A193 Grade b8 Stud Bolts

Recommended Class of Nuts & Washers

Bolting Grade Nut Grade Washer Grade
ASTM A193 Grade B8 ASTM A194 Grade 8 SS 304

ASTM A193 B8 Bolts Property Class

For Bolts & Screws A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H
For Nuts A2-70, A2-80, A4-70, A4-80, F594C, F594D, F594G, F594H, A2-035, A4-040
For SHCS F837B, F837C, F837E, F837
For Threaded Rods A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H, B8, B8M CL1 & CL2

Stainless Steel Grade b8 Tie Bar Mechanical Properties Table

View Dimensions of A193 Grade B8 Fasteners, ASME SA193 Grade b8 Tie Rod & SS ASTM A193 B8 Bolt, ASTM A193 b8 Hex Head Bolt Weight and Size chart online
Grade Size Tensile ksi, min Yield, ksi, min Elong, %, min RA % min HBW HRC
B8 Class 1 All 75 30 30 50 223 max 96 max
B8 Class 2 Up to 3/4 125 100 12 35 321 max 35 max
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

A193 Gr b8 Double Ended Studs Torque Specs

Check below ASTM A193 Grade b8 Stainless Steel Bolt & Screw Torque which is calculated from a yield strength of 70ksi

A193 Grade b8 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

Check below ASTM A193 Grade b8 Stainless Steel Bolt & Screw Torque which is calculated from a yield strength of 80ksi

A193 Grade b8 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

Stainless Steel Grade b8 Fasteners (Nut Bolts Screw Washer) DIN and ISO designations

ASTM A193 B8 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 B8 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

Dimensions Chart of ASTM A193 B8 Hex Bolt

ASTM A193 B8 Hex Bolt Dimension
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

ASTM A193 B8 Heavy Hex Bolt Dimensions

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 6.5