ASTM A193 B7 High Strength Threaded Rods
ASTM A193 B7 Threaded Rods are high strength alloy steel threaded fasteners manufactured according to ASTM A193 specifications. Made from chromium-molybdenum steel, A193 B7 threaded rods offer excellent tensile strength, high temperature resistance and reliable mechanical performance for demanding industrial applications.
These threaded rods are widely used in pressure vessels, petrochemical equipment, power generation facilities and flange connections where high strength and heat resistance are required. Available in different diameters, lengths and thread configurations, ASTM A193 B7 threaded rods are designed for secure and durable fastening in critical applications.
Specification of American Standard A193 B7 Threaded Rods:
The specification of ASTM A193 B7 threaded rods covers the main technical requirements including diameter range, dimension standard, thread type, material grade, tensile strength and compatible fastening components. These threaded rods are manufactured with UNC, UNF and 8UN thread options and are available in diameters from 1/4″ to 4″ according to different application requirements.
The manufacturing process of ASTM A193 B7 threaded rods includes wire drawing, thread rolling, heat treatment and surface treatment to achieve required mechanical properties and surface protection. Available surface finishes include black oxide coating, electroplating zinc plating, hot-dip galvanizing, mechanical galvanizing, Dacromet coating, painting and powder coating. They are commonly supplied with ASTM A194 Grade 2H heavy hex nuts and compatible washers for complete fastening assemblies.
| Product name | ASTM A193 B7 threaded rods |
|---|---|
| Diameter | 1/4″ – 4″ |
| Dimension Standard | ASME B 18.31.3 |
| Thread | UNC/UNF/8UN |
| Class | B7 |
| Tension Strength | 125 KSI |
| Compatible nuts/washers | A194 2H heavy hex nuts |
| Manufacturing Process | wire drawing, thread rolling, heat treatment, surface treatment |
| Surface treatment | Black Oxide Coating/Zinc Plating (Electroplating)/Hot-Dip Galvanizing/Dacromet Coating/PTFE |
| Application Industry | Piping Systems/Pressure Vessels/Pressure Vessels/Oil and Gas Industry/Power Generation/Chemical Processing |
Chemical Composition:
| Property class | Material and heat treatment | Chemical composition limits (cast analysis, %) a | ||||||
|---|---|---|---|---|---|---|---|---|
| A193 B7 | Alloy steel, AISI 4140/4142 quenched and tempered | Carbon | Manganese | Phosphorus, max | Sulfur, max | Silicon | Chromium | Molybdenum |
| 0.37 - 0.49% | 0.65 - 1.10% | 0.035% | 0.040% | 0.15 - 0.35% | 0.75-1.2% | 0.15 - 0.25% | ||
Mechanical and physical properties:
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min | HBW | Rockwell |
|---|---|---|---|---|---|---|---|
| B7 | Up to 2-1/2 | 125 | 105 | 16 | 50 | 321 max | 35 HRC max |
| 2-5/8 - 4 | 115 | 95 | 16 | 50 | |||
| 4-1/8 - 7 | 100 | 75 | 18 | 50 |
- RELATED FASTENERS LISTS:
- DIN975 THREADED
- HEAVY HEX BOLTS
- DIN933 HEX BOLTS
- AS1252 HEX BOLTS
- DIN6914 HEX BOLTS
- ASME B 18.2.1 HEX BOLTS
- A325 HEAVY HEX BOLTS
- A490 HEAVY HEX BOLTS
- RELATED NUTS LIST:
- HEX NUTS
- HEAVY HEX NUTS
- ISO4032 HEX NUTS
- DIN934 HEX NUTS
- A194 HEAVY HEX NUTS
- A563 HEAVY HEX NUTS
- THREADED ROD LIST:
- DIN975 THREADED RODS
- A193 B7 STUD BOLTS
Dimension Chart of A193 B7 Threaded Rod
The dimension chart of ASTM A193 B7 threaded rods provides detailed information about the available sizes, thread specifications and dimensional requirements. The standard dimensions are based on ASME B18.31.3 requirements, with diameter options ranging from 1/4″ to 4″ and different thread configurations including UNC, UNF and 8UN.
| Mon | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 | 1-3/4 | 2 |
| P | 20 | 18 | 16 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | 6 | 5 | 4.5 |
| c max | 0.1 | 0.111 | 0.125 | 0.143 | 0.154 | 0.167 | 0.182 | 0.2 | 0.222 | 0.25 | 0.286 | 0.286 | 0.333 | 0.333 | 0.4 | 0.444 |
FAQ about A193 B7 threaded rods Manufacturer:
1.How are A193 B7 threaded rods manufactured?
The manufacturing process typically involves selecting high-quality A193 B7 alloy steel, cutting the rod to the specific length, thread rolling, heat treatment to enhance strength.
2.What quality control measures are in place during manufacturing?
A193 B7 threaded rod manufacturing including hardness testing/tension test/dimension test/thread test, to ensure that the rod meet the required standards and mechanical properties.
3. What’s the price of type1 of A193 b7 threaded rods?
B7 threaded rods are made of Alloy steel AISI4140, the AISI4140 material price is about 800usd-1000usd/ton in China. The price of A193 B7 plain threaded rod we manufacture is about 1700-2000 usd/ton. The material price of steel will fluctuate frequently, and the price is different for different surface treatment/quantity, so please send the inquiry to our email for the specific price. Emai: info@china-bolts.com
4.Can you provide samples of A193 b7 stud bolt?
Yes, we have some samples in regular sizes. Samples can be provided free of charge. But the customer needs to bear the freight.