ASTM A193 B7 Bolt
Grade A193 Flange Head Bolt, ASTM A193 B7 Hex Head Bolt, ASME SA193 Grade B7 U Bolt, AISI Grade B7 Allen Bolt, B7 Grade Stud Bolt.
The bolts have chromium molybdenum and are made of steel that has been heating treated, as stated in the ASTM A193 B7 Metric Bolts specification. Chromium and molybdenum produce the bulk of the bolts, ASTM A193 Grade B7, the principal alloying components. The quenching and tempering processes, both involving heat, are used in the production of these Grade B7 A193 Allen Bolts. Heat treatment of the A193 B7 Bolts Content helps to develop the mechanical attributes the client want. For instance, the tensile properties of the Gr B7 SA193 Stud Bolt are enhanced after heating treatment.
In general terms, the ASME SA193 Grade B7 Hex bolts are offered with a finish described as “metal surfaces.” However, if the customer chooses, the A193 B7 Anchor bolt can be hot-dip galvanized, zinc plated, coated with Xylan or PTFE, or zinc studded. The ASTM A193 B7 Threaded Rod benefits from having its corrosion resistance enhanced by a coating applied. Typical applications for these ASTM B7 Grade ASME SA193 Half threaded Stud bolts include fastening materials subjected to medium to extreme temperatures. These bolts can be air quenched at temperatures ranging from -40 degrees Fahrenheit to 900 degrees Fahrenheit, and they are liquid-quenched at temperatures between 50 and 900 degrees Fahrenheit.
About ASTM A193 B7 Bolt
ASTM A193 B7 Hex Bolt, SA193 Grade B7 Allen Bolt, Grade A193 Hex Head Bolt, ASME SA193 Grade B7 Anchor Bolt, AISI Grade B7 U Bolt, A193 B7 Flange Head Bolt, B7 Grade Eye Bolt.
Compared to the B7 grade bolt standards, those for the ASTM A193 Grade B7m Coated Bolts have a lower tensile and yield strength. There is an abundant supply of ASTM A193 B7 Heavy Hex Bolts accessible on the market today. Because they are so readily available, A193 Gr B7 Anchor Bolts are utilized in a wide variety of contexts. Pipe flange connections and other construction-related applications require frequent use of ASTM A193 B7 hexagonal Bolts.
ASTM A193 B7 Bolt Specification
| Dimensions | ASME B18.2.1, B18.3 |
| Melt Origin | Korea, South America, Japan, East Europe, |
| Mandatory Requirements | Free from Mercury & Radioactive Contamination |
| Additional Certifications | PED 97/ 23/ EC Certified, Merkblatt AD 2000 W2 Certified |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Additional Requirements | NACE MR0103 / MR0175 / ISO 15156 Compliance |
| Threads Configuration | ASME B1.1 2A/3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads |
Equivalent Grades ASTM A193 B7 Bolt
| ASTM | AISI |
| ASTM A193 GRADE B7 | 4140 |
Chemical Composition ASTM A193 B7 Bolt
| Element | Carbon | Manganese | Phosphorus, maximum | Sulfur, maximum | Silicon | Chromium | Nickel | Molybdenum |
| B7 (AISI 4140) | 0.38 - 0.48% | 0.75 - 1.00% | 0.035% | 0.040% | 0.15 - 0.35% | 0.80 - 1.10% | - | 0.15 - 0.25% |
Mechanical Properties ASTM A193 B7 Bolt
| Grade | Diameter,[mm] | Minimum Tempering Temperature | Tensile Strength, min, MPa | Yield Strength min, 0.2% offset MPa | Elongation in 4D min, % | Reduction of Area min % | Hardness max |
| B7 | M64 and under | 593 | 860 | 720 | 16 | 50 | 321 HBW or 35 HRC |
| over M64 to M100 | 593 | 795 | 655 | 16 | 50 | 321 HBW or 35 HRC | |
| over M100 to M180 | 593 | 690 | 515 | 18 | 50 | 321 HBW or 35 HRC |
Dimensions Of ASTM A193 B7 Bolt
ASTM A193 Grade B7 Bolts Dimensions Chart :
| Nominal Size or Basic Product Diameter | Full-Size Body Diameter, E | Width Across Flats, F | Width Across Corners, G | Head Height, H Basic | Radius of Fillet, R | Nominal Thread Length for Bolt Lengths, LT |
|||||||||
| inch | mm | Max | Min | Basic inch | Max | Min | Max | Min | Basic inch | Max | Min | Max | Min | 6 in. and Shoter | Over 6 in. |
| 1⁄4 | 0.25 | 0.26 | 0.237 | 7⁄16 | 0.438 | 0.425 | 0.505 | 0.484 | 11⁄64 | 0.188 | 0.15 | 0.03 | 0.01 | 0.75 | 1 |
| 5⁄16 | 0.3125 | 0.324 | 0.298 | 1⁄2 | 0.5 | 0.484 | 0.577 | 0.552 | 7⁄32 | 0.235 | 0.195 | 0.03 | 0.01 | 0.875 | 1.125 |
| 3⁄8 | 0.375 | 0.388 | 0.36 | 9⁄16 | 0.562 | 0.544 | 0.65 | 0.62 | 1⁄4 | 0.268 | 0.226 | 0.03 | 0.01 | 1 | 1.25 |
| 7⁄16 | 0.4375 | 0.452 | 0.421 | 5⁄8 | 0.625 | 0.603 | 0.722 | 0.687 | 19⁄64 | 0.316 | 0.272 | 0.03 | 0.01 | 1.125 | 1.375 |
| 1⁄2 | 0.5 | 0.515 | 0.482 | 3⁄4 | 0.75 | 0.725 | 0.866 | 0.826 | 11⁄32 | 0.364 | 0.302 | 0.03 | 0.01 | 1.25 | 1.5 |
| 5⁄8 | 0.625 | 0.642 | 0.605 | 15⁄16 | 0.938 | 0.906 | 1.083 | 1.033 | 27⁄64 | 0.444 | 0.378 | 0.06 | 0.02 | 1.5 | 1.75 |
| 3⁄4 | 0.75 | 0.768 | 0.729 | 11⁄8 | 1.125 | 1.088 | 1.299 | 1.24 | 1⁄2 | 0.524 | 0.455 | 0.06 | 0.02 | 1.75 | 2 |
| 7⁄8 | 0.875 | 0.895 | 0.852 | 1 5⁄16 | 1.312 | 1.269 | 1.516 | 1.447 | 37⁄64 | 0.604 | 0.531 | 0.06 | 0.02 | 2 | 2.25 |
| 1 | 1 | 1.022 | 0.976 | 1 1⁄2 | 1.5 | 1.45 | 1.732 | 1.653 | 43⁄64 | 0.7 | 0.591 | 0.09 | 0.03 | 2.25 | 2.5 |
| 1 1⁄8 | 1.125 | 1.149 | 1.098 | 1 11⁄16 | 1.688 | 1.631 | 1.949 | 1.859 | 3⁄4 | 0.78 | 0.658 | 0.09 | 0.03 | 2.5 | 2.75 |
| 1 1⁄4 | 1.25 | 1.277 | 1.223 | 1 7⁄8 | 1.875 | 1.812 | 2.165 | 2.066 | 27⁄32 | 0.876 | 0.749 | 0.09 | 0.03 | 2.75 | 3 |
| 1 3⁄8 | 1.375 | 1.404 | 1.345 | 2 1⁄16 | 2.062 | 1.994 | 2.382 | 2.273 | 29⁄32 | 0.94 | 0.81 | 0.09 | 0.03 | 3 | 3.25 |
| 1 1⁄2 | 1.5 | 1.531 | 1.47 | 2 1⁄4 | 2.25 | 2.175 | 2.598 | 2.48 | 1 | 1.036 | 0.902 | 0.09 | 0.03 | 3.25 | 3.5 |
| 1 5⁄8 | 1.625 | 1.658 | 1.591 | 2 7⁄16 | 2.438 | 2.356 | 2.815 | 2.616 | 1 3⁄32 | 1.116 | 0.978 | 0.09 | 0.03 | 3.5 | 3.75 |
| 1 3⁄4 | 1.75 | 1.785 | 1.716 | 2 5⁄8 | 2.625 | 2.538 | 3.031 | 2.893 | 1 5⁄32 | 1.196 | 1.054 | 0.12 | 0.04 | 3.75 | 4 |
| 1 7⁄8 | 1.875 | 1.912 | 1.839 | 2 13⁄16 | 2.812 | 2.719 | 3.248 | 3.099 | 1 1⁄4 | 1.276 | 1.13 | 0.12 | 0.04 | 4 | 4.25 |
| 2 | 2 | 2.039 | 1.964 | 3 | 3 | 2.9 | 3.464 | 3.306 | 1 11⁄32 | 1.388 | 1.175 | 0.12 | 0.04 | 4.25 | 4.5 |
| 2 1⁄4 | 2.25 | 2.305 | 2.214 | 3 3⁄8 | 3.375 | 3.262 | 3.897 | 3.719 | 1 1⁄2 | 1.548 | 1.327 | 0.19 | 0.06 | 4.75 | 5 |
| 2 1⁄2 | 2.5 | 2.559 | 2.461 | 3 3⁄4 | 3.75 | 3.625 | 4.33 | 4.133 | 1 21⁄32 | 1.708 | 1.479 | 0.19 | 0.06 | 5.25 | 5.5 |
| 2 3⁄4 | 2.75 | 2.827 | 2.711 | 4 1⁄8 | 4.125 | 3.988 | 4.763 | 4.546 | 1 13⁄16 | 1.869 | 1.632 | 0.19 | 0.06 | 5.75 | 6 |
| 3 | 3 | 3.081 | 2.961 | 4 1⁄2 | 4.5 | 4.35 | 5.196 | 4.959 | 2 | 2.06 | 1.815 | 0.19 | 0.06 | 6.25 | 6.5 |
| 3 1⁄4 | 3.25 | 3.335 | 3.21 | 4 7⁄8 | 4.875 | 4.712 | 5.629 | 5.372 | 2 3⁄16 | 2.251 | 1.936 | 0.19 | 0.06 | 6.75 | 7 |
| 3 1⁄2 | 3.5 | 3.589 | 3.461 | 5 1⁄4 | 5.25 | 5.075 | 6.062 | 5.786 | 2 5⁄16 | 2.38 | 2.057 | 0.19 | 0.06 | 7.25 | 7.5 |
| 3 3⁄4 | 3.75 | 3.858 | 3.726 | 5 5⁄8 | 5.625 | 5.437 | 6.495 | 6.198 | 2 1⁄2 | 2.572 | 2.241 | 0.19 | 0.06 | 7.75 | 8 |
| 4 | 4 | 4.111 | 3.975 | 6 | 6 | 5.8 | 6.928 | 6.612 | 2 11⁄16 | 2.764 | 2.424 | 0.19 | 0.06 | 8.25 | 8.5 |
Different Types Of ASTM A193 B7 Bolt
Different Types Of Bolts:
ASTM A193 Grade B7 Hex Bolts
ASTM A193 Grade B7 Carriage Bolts
ASTM A193 Grade B7 Stud Bolts
ASTM A193 Grade B7 Hex Head Bolts
ASTM A193 Grade B7 Forged Hook Bolts
ASTM A193 Grade B7 Torx Bolts
ASTM A193 Grade B7 Countersunk Bolts
ASTM A193 Grade B7 Flange Head Bolts
ASTM A193 Grade B7 Allen Bolts
ASTM A193 Grade B7 12-Point Flange Bolts
ASTM A193 Grade B7 Eye Bolts
ASTM A193 Grade B7 Bolts
ASTM A193 Grade B7 U Bolts
ASTM A193 Grade B7 J Bolts
ASTM A193 Grade B7 Elevator Bolt
ASTM A193 Grade B7 Threaded Expansion Anchor Bolt
ASME SA 193 B7 High Performance Anchor Bolts
