The different classes of these fasteners such as the A193 B8 Washer have different heat treatments applied to them. The B8 is of a higher class and it is made up of AISI 209 steel with nitrogen strengthened. The A193 B8 Material is also called the Nitronic 50 grade. The different types are used for different application purposes. There are classes 1 and 2 in the ASTM A193 B8 Threaded Rod material as well. The class 1 has 75ksi minimum tensile strength and 30ksi minimum yield strength where the class 2 has 125ksi minimum tensile strength and 100ksi minimum yield strength. The ASTM A193 B8 Studs are used with pipes mostly where the stud is inserted into the hole for welding of the fasteners. The most commonly used fasteners of this grade is the Hex Bolt A193 B8. Due to the high tensile strength values, the fasteners can be used under high pressure, high tensile and in high stress applications. As a leading supplier, we produce the a193 b8 Hex bolts and others in all dimensions ranging from ¼ inches to 4 inches and above depending on the type of the fastener. Regal Sales Corporation is a leading manufacturer and supplier of the different types such as the ASTM A193 B8 Nuts in different dimensions and classes. Please feel free to contact us for more information such as the a193 b8 bolt torque chart, full product catalog or the pricing.
ASTM A193 B8 Nuts
ASME SA 193 Grade B8 studs
ASTM A193 B8 Bolts
ASTM A193 B8 Socket Head Cap Screws are made under the specification covering alloy steel and stainless steel bolts for valves, flanges, pressure vessels and fittings for high pressure services. These fasteners can also be used for special purpose applications. There are screws, bars, bolts, studs, wire and stud bolts in this material grade.
Dimensions | ASME B18.2.1, B18.3 |
---|---|
Additional Requirements | NACE MR0103/ MR0175/ ISO 15156 Compliance |
Mandatory Requirements | Free from Mercury & Radioactive Contamination |
Melt Origin | Korea/ South America/ East Europe/ Japan |
Certification | Dual Certified As per ASTM & ASME Codes |
Additional Certifications | PED 97/ 23/ EC Certified, Merkblatt AD 2000 W2 Certified |
Threads Configuration | ASME B1.1 2A/ 3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads |
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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 |
Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
B8 Class 1 | All | 75 | 30 | 30 | 50 |
B8 Class 2 | 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 B8 |
A193 Grade B8T |
Percentage | % | % |
C. | 0.08 max. | 0.08 max. |
Mn. | 2.00 max. | 2.00 max. |
Si. | 1.00 max. | 1.00 max. |
P. | 0.045 max. | 0.045 max. |
S. | 0.030 max. | 0.030 max. |
Cr. | 18.00---20.00 | 17.00---9.00 |
Ni. | 8.00---10.50 | 9.00---12.00 |
Mo. | --- | --- |
V. | --- | --- |
Ti. | --- | 5xCMIN |
Brinell Hardness | 223 B.H.N. max. |
223 B.H.N. max. |
Impact Value | Not applicable |
Not applicable |
ASTM A193 Grand B8 Stud Bolt | ASTM A193 B8 Stud Bolts |
Stainless Steel B8 Threaded Rod | ASTM A193 stud bolts |
SA193 Nuts | ASTM A 193 B8 Stud Bolt |
ASTM A 193 Tie Rod | Stainless Steel B8 Studs |
B8 Stainless Steel Stud bolts | ASTM A193 B8 Stud Bolts |
ASTM A 193 B8 Lag Bolt | B8 Grub Screw |
ASTM A193 B8 Anchor Bolt | B8 Shoulder Bolt |
ASTM A 193 B8 Heavy Hex Bolts | A193 B8 Hex Nut |
ASTM A 193 Eye Bolt | SS B8 Plow Bolt |
Stainless Steel B8 Draw Bolt | B8 Hanger Bolt |
SS B8 Step Bolt | ASTM A 193 B8 Studs |
ISO Approved ASTM A193 U Bolts | ASTM A193 J Bolt |
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 |