There are two classes of these fasteners and both classes are used in different application set ups. Regal Sales Corporation is a leading manufacturer and supplier of both classes in various dimensions. The ASTM A193 gr. b8c Material has 75ksi minimum tensile strength and 30ksi minimum yield strength for class 1. The class products range in size from ¾ inches to 1 ½ inches. These different dimensions have different strength values. The tensile strength of class 2 ranges from 100ksi to 125ksi and the yield strength varies from 12ksi to 28ksi. The Sa 193 Gr B8c Screw is used under high pressure high temperature applications. The hardness of these fasteners also varies with class. The class 1 fasteners have 223HBW and the class 2 fasteners have 321HBW hardness. As a leading supplier, we supply the ASTM A193 B8C Class 2 Fasteners and the class 1 fasteners in all available sizes. You can contact us to know more about the fasteners and to have a complete price list.
ASTM A193 B8C Class 1 Bolts
ASTM A193 Grade B8c Hex Bolts
ASME SA 193 Gr B8c Screw
ASTM A193 B8C Class 1 Stud, bolts and other fasteners are made up of AISI 347 austenitic stainless steel grade. The material has carbon, manganese, phosphorus, sulfur, silicon, 17% chromium, 9% nickel and columbium and tantalum for stabilization. The ASTM A193 grade b8c Hex Bolts have good tensile and yield strengths.
Grade | Tensile Class | Raw Material Description |
---|---|---|
B8C | Class 1 | AISI 347 Stainless Steel, Carbide Solution Treated |
B8C | Class 2 | AISI 347 Stainless Steel, Carbide Solution Treated and Strained Hardened |
Chemical | Percentage (%) |
C. | 0.08 max. |
Mn. | 2.00 max. |
Si. | 1.00 max. |
P. | 0.045 max. |
S. | 0.030 max. |
Cr. | 17.00---19.00max. |
Ni. | 12.00---13.00max. |
Mo. | ---- |
Grade | Diameter | Tensile Strength | Yield Strength | Elongation | Reduction | Hardness |
---|---|---|---|---|---|---|
Grade B8C | M20 and under | 860 | 690 | 12 | 35 | 321 HBW or 35 HRC |
Grade B8C | M20 to M24, inclusive | 690 | 550 | 20 | 45 | 321 HBW or 35 HRC |
Grade B8C | M24 to M30, inclusive | 655 | 450 | 25 | 45 | 321 HBW or 35 HRC |
Grade B8C | M30 to M36, inclusive | 620 | 345 | 30 | 45 | 321 HBW or 35 HRC |
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) | |
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 |
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 |
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 |
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 Grade B8C Stud Bolt | A193 B8C Hex Nut |
ASTM A193 B8C Anchor Bolt | B8C Heavy Hex Bolts |
A193 Gr. B8C Split Washers | ASME SA193 Eye Bolt |
ASTM A193 Gr. B8C Threaded Rod | ASTM A193 Grade B8C Double Ended Studs |
ASME SA193 B8C Eye Nuts | A193 B8C Spring Washers |
ASTM A193 Grade B8C Lock Washers | ASTM A193 Grade B8C T Nuts |
ASTM A193 Grade B8C Lock Nut | A193 B8C Square Nuts |
ASME SA193 B8C U Bolts | A193 B8C Flange Bolts |
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 |