ASTM A193 Gr B7 Fasteners Suppliers In India
Unifit Metalloys Inc. is your trusted partner for top-quality ASTM A193 Gr B7 fasteners, delivering unmatched reliability for critical projects. Our A193 Gr B7 bolts, B7 nuts, and B7 studs are engineered to outperform in high-temperature operations, tough welding conditions, and chemically aggressive environments, making them the preferred choice for buyers seeking long-lasting performance.
Utilizing the best A193 Gr B7 and A194 2H materials, our fastener range featuring A193 B7 heavy hex bolts, B7 hex head screws, and stud bolts A193 Gr B7 with A194 Gr 2H nuts ensures superior strength, corrosion resistance, and operational safety even in extreme industrial situations. Each bolt, screw, and nut is produced to exacting ASTM and ASME standards, guaranteeing uniformity, durability, and peace of mind.
Buyers across petrochemical, aerospace, power generation, and heavy engineering sectors depend on our SA 193 Gr B7 material for reliable, long-term results. Choose Unifit Metalloys Inc. for B7 bolt material and b7 2h fasteners that keep your operations running securely, no matter the challenge.
Request QuoteASTM A193 Grade B7 Specification
ASTM A193 Grade B7 is a common high tensile alloy steel bolting material which is used in high-temperature and high-pressure applications. Some of the important requirements identified in this standard include chemical composition, mechanical properties, heat treatment process, hardness range, product marking, and certification requirements. Due to the fact that ASTM A193 supports SI (metric) and inch-pound, B7 fasteners can be used in engineering and industrial works throughout the world.
B7 is a chromium molybdenum alloy steel which is heat-treated providing remarkable strength and performance. The material provides tensile strength of 125 ksi (860 MPa), 105 ksi (720 MPa) yield strength and maximum hardness of 35 HRC, which makes it a good performing material in harsh conditions like pressure vessels, boilers and heat exchanger flanges and valves. The majority of the manufacturers use A193 Grade B7 bolts manufactured out of AISI 4140 alloy steel bar stock or forged stock, which offers great resistance to thermal stress and fatigue.
This specification is normally used together with A194 Grade 2H nuts, thus a reliable one on carbon steel and alloy steel piping systems. B7 stud bolts and non headed fasteners come in metric (M6-M180) and imperial (1/4 inch-7 inches), and any length and finish can be custom ordered. To provide full reference, the users may see the tables provided by ASTM A193 on the chemical composition, mechanical properties, and hardness requirements, product marking, testing standards, and traceable certification to verify the adherence to the industrial and safety regulations.
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Types of ASTM A193 Grade B7 Fasteners
It is helpful to understand the different types of ASTM A193 Grade B7 fasteners available to match them accurately with project requirements. Knowing the variety supports efficient procurement decisions.
ASTM A193 B7 Bolts
ASTM A193 B7 Structural Bolts
ASTM A193 B7 Heavy Hex Bolts
ASTM A193 B7 Hex Bolts
ASTM A193 B7 Hexagon Head Bolts
SA 193 B7 Machine Bolts
ASTM A193 Grade B7 T Bolts
ASTM A193 Gr. B7 Eye Bolt
SA 193 B7 Foundation Bolts
Alloy Steel A193 Gr B7 J Bolts
ASTM A193 B7 Button Head Bolt
SA 193 B7 Anchor Bolts
ASTM A193 B7 Long Bolts
ASTM A193 B7 Carriage Bolt
ASTM A193 B7 Elevator Bolt
ASTM A193 B7 Timber Bolts
SA 193 B7 Square Bolt
ASTM A193 B7 Metric Bolt
ASTM A193 B7 Plow Bolts
Alloy Steel Gr. B7 U Bolts
ASTM A193 B7 Flange Bolts
ASTM A193 B7 Screw
ASTM A193 B7 Socket Set Screw
ASTM A193 B7 Self Drilling Screw
ASTM A193 B7 Socket Head Cap Screw
SA 193 B7 Hex Head Screws
ASTM A193 B7 Wood Screw
ASTM A193 Gr. B7 Eye Screw
SA 193 Gr. B7 Wing Screw
ASTM A193 B7 Self Tapping Screws
ASTM A193 Gr. B7 Roofing Screw
ASTM A193 B7 Phillips Head Screw
ASTM A193 B7 Decking Screw
ASTM A193 B7 Machine Screw
ASTM A193 B7 Thumb Screw
ASTM A193 B7 Drywall Screws
SA 193 B7 Chipboard Screw
ASTM A193 B7 Metric Set Screws
Alloy Steel B7 Sems Screw
ASTM A193 B7 Thread Rolling Screw
ASTM A193 B7 Stud Bolt
ASTM A193 B7 Full Threaded Stud Bolts
SA 193 B7 Half Threaded Stud Bolts
Alloy Steel ASTM A193 B7 Threaded Rod
ASTM A193 B7 Double Ended Studs
ASTM A193 B7 Tap End Stud Bolt
Alloy Steel ASTM A193 B7 Tie Rods
Alloy Steel A193 Grade B7 Studs
SA 193 B7 Single End Stud Bolts
A193 Gr.B7 Reduced Shank Stud Bolt
A193 B7 Continuous Threaded Stud Bolt
A193 B7 Partial Threads Stud Bolt
SA193 / A193 B7 Heavy Stud Bolts
ASTM A193 Gr B7 Chemical Composition
Knowing the chemical composition is essential to evaluate how ASTM A193 Gr B7 fasteners will perform under corrosive and high-temperature conditions. This knowledge guides buyers toward the most suitable materials.
| Element | Minimum (%) | Maximum (%) |
|---|---|---|
| Carbon (C) | 0.37 | 0.49 |
| Manganese (Mn) | 0.65 | 1.10 |
| Phosphorus (P) | — | 0.035 |
| Sulfur (S) | — | 0.040 |
| Silicon (Si) | 0.15 | 0.35 |
| Chromium (Cr) | 0.75 | 1.20 |
| Molybdenum (Mo) | 0.15 | 0.25 |
Heat Treatment of ASTM A193 Grade B7
B7 and B7M fasteners are heat treated by quenching in a liquid medium followed by tempering to ensure optimal SA 193 Gr B7 material properties and durability. For B7M bolts, the final heat treatment, often tempering at a minimum of 1150°F (620°C) is performed after all machining and forming, such as thread rolling or cutting, to meet ASTM A193 Gr B7 standards. Surface preparation for hardness checks, ultrasonic bolt tensioning, and nondestructive evaluation is allowed for stud bolt A193 Gr B7 A194 2h nuts and B7 2h fasteners.
Unless otherwise requested, A193 Gr B7 material can be heat treated using furnace, induction, or electrical resistance methods, giving manufacturers flexibility while meeting ASTM A193 Gr B7 material specification for reliable and consistent product quality.
Mechanical Properties for Metric ASTM A193 Gr B7 Fasteners
It helps buyers to familiarize themselves with the mechanical properties of metric ASTM A193 Gr B7 fasteners for accurate selection and engineering compatibility. These properties confirm their capacity to withstand operational stresses.
| Diameter mm | Min Tempering Temperature, °F | Tensile Strength min, MPa | Yield strength, min, 0.2% offset, MPa | Elongation in 4D min, % | Reduction of Area, min, % | Hardness, max |
|---|---|---|---|---|---|---|
| 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 |
Mechanical Properties for Imperial SA 193 Gr B7 Fasteners
A good grasp of mechanical properties for imperial SA 193 Gr B7 fasteners aids buyers in confirming their suitability for specific applications. This ensures that the fasteners meet exact performance demands.
| Diameter Inch | Min Tempering Temperature, °F | Tensile Strength min, ksi | Yield strength, min, 0.2% offset, ksi | Elongation in 4D min, % | Reduction of Area, min, % | Hardness, max |
|---|---|---|---|---|---|---|
| 2.5 and under | 1100 | 125 | 105 | 16 | 50 | 321 HBW or 35 HRC |
| over 2.5 to 4 | 1100 | 115 | 95 | 16 | 50 | 321 HBW or 35 HRC |
| over 4 to 7 | 1100 | 100 | 75 | 18 | 50 | 321 HBW or 35 HRC |
ASTM A193 Grade B7 Bolt Marking
Recognizing bolt markings is key for buyers to verify the grade and authenticity of ASTM A193 Grade B7 fasteners. Proper marking safeguards against substandard or counterfeit products.
| UNF B7 | "UNF" Manufacturer's Logo & "B7" Grade Marking |
|---|
ASTM A193 Grade B7 Raw Material
The major raw material used to make ASTM A193 Grade B7 bolts, stud bolts and any other similar threaded fasteners made with AISI-SAE 4140 alloy steel. This steel is hardened, where it is quenched in a liquid medium and then tempered, to make sure that it attains the precise mechanical property specifications as that of the ASTM A193 Grade B7 specifications.
AISI 4140 is a low-alloy chromium-molybdenum strengthened steel which can be heat-treated to provide high tensile strength due to controlled quenching and tempering treatments, thus making it known to be heat-treatable. This is a versatile alloy with a combination of atmospheric corrosion resistance, toughness, wear resistance, and fatigue strength, which is considered very important in the manufacture of durable and reliable A193 Gr B7 material fasteners that are being widely used in highly demanding industrial applications.
Size Chart of A193 Grade B7 Stud Bolts
Having access to the size chart of A193 Grade B7 stud bolts allows buyers to choose the correct dimensions effortlessly. This facilitates proper installation and maximizes structural safety.
| ASTM A193 Grade B7 Stainless Steel Screws Types | SIZE | GRADE | ASME | ISO | ASTM |
|---|---|---|---|---|---|
| A193 Grade B7 Socket Head Cap Screws | M1.6 to M64 | 12.9 | B18.3.1M | 4762 | A574M |
| Steel B7 Grade Knurled Point Socket Set Screws | M3 to M20 | 45H | B18.3.6M | 4029 | F912M |
| ASME SA193 Grade B7 Plain Point Socket Set Screws | M3 to M20 | 45H | B18.3.6M | 4029 | F912M |
| A193 Gr B7 Socket Head Shoulder Screws | M6 to M24 | 012.9 | B18.3.3M | ||
| Stainless Steel Grade B7 Countersunk Socket Head Screws | M3 to M20 | 012.9 | B18.3.5M | 10642 | F835M |
| ASTM A193 Grade B7 Button Head Socket Screws | M3 to M12 | 012.9 | B18.3.4M | 7380 | F835M |
| ASTM A193 B7 Stainless Steel Socket Low Head Cap Screws | M4 to M20 | 10.9 | |||
| Steel A193 Grade B7 Flange Button Head Socket Screws | M3 to M10 | 012.9 | F835M | ||
| Grade B7 Cone Point Socket Set Screws | M3 to M12 | 45H | B18.3.6M | 4027 | F912M |
| ASME SA 193 B7 Flat Point Socket Set Screws | M6 to M12 | 45H | B18.3.6M | 4026 | F912M |
| Steel ASTM A193 Grade B7 Dog Point Socket Set Screws | M3 to M20 | 45H | B18.3.6M | 4028 | F912M |
| ASME SA193 Gr B7 Taper Pressure Plug | M8 to M22 | – |
ASTM A193 Gr B7 Torque Chart
Using the ASTM A193 Gr B7 torque chart guides buyers in applying the precise torque, which is crucial for secure joints and avoiding fastener damage. Proper torque enhances overall system performance.
| ASTM A193 Grade B7 Stainless Steel Screws Types | SIZE | GRADE | ASME | ISO | ASTM |
|---|---|---|---|---|---|
| A193 Grade B7 Socket Head Cap Screws | M1.6 to M64 | 12.9 | B18.3.1 M | 4762 | A574M |
| Steel B7 Grade Knurled Point Socket Set Screws | M3 to M20 | 45H | B18.3.6M | 4029 | F912M |
| ASME SA193 Grade B7 Plain Point Socket Set Screws | M3 to M20 | 45H | B18.3.6M | 4029 | F912M |
| A193 Gr B7 Socket Head Shoulder Screws | M6 to M24 | 012.9 | B18.3.3M | ||
| Stainless Steel Grade B7 Countersunk Socket Head Screws | M3 to M20 | 012.9 | B18.3.5M | 10642 | F835M |
| ASTM A193 Grade B7 Button Head Socket Screws | M3 to M12 | 012.9 | B18.3.4M | 7380 | F835M |
| ASTM A193 B7 Stainless Steel Socket Low Head Cap Screws | M4 to M20 | 10.9 | |||
| Steel A193 Grade B7 Flange Button Head Socket Screws | M3 to M10 | 012.9 | F835M | ||
| Grade B7 Cone Point Socket Set Screws | M3 to M12 | 45H | B18.3.6M | 4027 | F912M |
| ASME SA 193 B7 Flat Point Socket Set Screws | M6 to M12 | 45H | B18.3.6M | 4026 | F912M |
| Steel ASTM A193 Grade B7 Dog Point Socket Set Screws | M3 to M20 | 45H | B18.3.6M | 4028 | F912M |
| ASME SA193 Gr B7 Taper Pressure Plug | M8 to M22 | – |
SA 193 Heavy Hex Bolt Dimension Standards
Familiarity with SA 193 heavy hex bolt dimension standards helps buyers verify that fasteners meet industry norms. This knowledge ensures compatibility with existing equipment and parts.
| ASTM A193 Grade B7 Stainless Steel Screws Types | SIZE | GRADE | ASME | ISO | ASTM |
|---|---|---|---|---|---|
| A193 Grade B7 Socket Head Cap Screws | M1.6 to M64 | 12.9 | B18.3.1 M | 4762 | A574M |
| Steel B7 Grade Knurled Point Socket Set Screws | M3 to M20 | 45H | B18.3.6M | 4029 | F912M |
| ASME SA193 Grade B7 Plain Point Socket Set Screws | M3 to M20 | 45H | B18.3.6M | 4029 | F912M |
| A193 Gr B7 Socket Head Shoulder Screws | M6 to M24 | 012.9 | B18.3.3M | ||
| Stainless Steel Grade B7 Countersunk Socket Head Screws | M3 to M20 | 012.9 | B18.3.5M | 10642 | F835M |
| ASTM A193 Grade B7 Button Head Socket Screws | M3 to M12 | 012.9 | B18.3.4M | 7380 | F835M |
| ASTM A193 B7 Stainless Steel Socket Low Head Cap Screws | M4 to M20 | 10.9 | |||
| Steel A193 Grade B7 Flange Button Head Socket Screws | M3 to M10 | 012.9 | F835M | ||
| Grade B7 Cone Point Socket Set Screws | M3 to M12 | 45H | B18.3.6M | 4027 | F912M |
| ASME SA 193 B7 Flat Point Socket Set Screws | M6 to M12 | 45H | B18.3.6M | 4026 | F912M |
| Steel ASTM A193 Grade B7 Dog Point Socket Set Screws | M3 to M20 | 45H | B18.3.6M | 4028 | F912M |
| ASME SA193 Gr B7 Taper Pressure Plug | M8 to M22 | – |
ASTM A193 Gr B7 Anchor Bolts Mechanical Strength
Understanding the mechanical strength of ASTM A193 Gr B7 anchor bolts is essential for buyers managing heavy load applications. It ensures the anchor bolts can maintain structural stability under pressure.
| Grade | Diameter | Tensile Strength | Yield Strength | Elongation | Reduction | Hardness |
|---|---|---|---|---|---|---|
| Grade B7 | M64 and under | 860 | 720 | 16 | 50 | 321 HBW or 35 HRC |
| Grade B7 | Over M64 to M100 | 795 | 655 | 16 | 50 | 321 HBW or 35 HRC |
| Grade B7 | Over M100 to M180 | 690 | 515 | 18 | 50 | 321 HBW or 35 HRC |
A193 Grade B7 Stud Bolts Weights
It is practical for buyers to know the weights of A193 Grade B7 stud bolts for logistical planning and cost estimation. Knowledge of fastener weights helps streamline inventory handling and transport.
| Length | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50mm | 0.015 | 0.024 | 0.035 | 0.049 | 0.066 | 0.082 | 0.103 | 0.128 | 0.149 | 0.193 | 0.233 | 0.287 | 0.353 | 0.419 |
| 55mm | 0.017 | 0.027 | 0.039 | 0.054 | 0.073 | 0.091 | 0.114 | 0.142 | 0.164 | 0.213 | 0.257 | 0.316 | 0.388 | 0.460 |
| 60mm | 0.019 | 0.029 | 0.042 | 0.059 | 0.079 | 0.098 | 0.121 | 0.154 | 0.179 | 0.231 | 0.279 | 0.344 | 0.422 | 0.500 |
| 65mm | 0.020 | 0.032 | 0.046 | 0.062 | 0.085 | 0.106 | 0.134 | 0.166 | 0.194 | 0.250 | 0.303 | 0.373 | 0.459 | 0.545 |
| 70mm | 0.022 | 0.034 | 0.049 | 0.066 | 0.092 | 0.115 | 0.140 | 0.179 | 0.209 | 0.270 | 0.326 | 0.401 | 0.493 | 0.585 |
| 75mm | 0.023 | 0.037 | 0.053 | 0.070 | 0.099 | 0.123 | 0.155 | 0.192 | 0.224 | 0.289 | 0.350 | 0.430 | 0.528 | 0.628 |
| 80mm | 0.025 | 0.039 | 0.056 | 0.078 | 0.105 | 0.131 | 0.165 | 0.205 | 0.238 | 0.308 | 0.373 | 0.459 | 0.565 | 0.670 |
ASTM A193 Gr B7 Fasteners Manufacturers, Suppliers & Exporters
Raise your bolting solutions with Unifit Metalloys Inc., the leading company in offering ASTM A193 Grade B7 fasteners, where precision engineering and outstanding value match each other. The quenching and tempering processes, which are highly developed, stringent batch hardness tests and complete chemical and mechanical certifications, assure every B7 bolt and stud will provide optimum performance. Flexible order quantities, simplified production processes and a strong base of global distribution networks enable Unifit Metalloys to achieve timely delivery of high-quality fasteners and to provide unmatched quality and affordable solutions to your most important projects.
Astm A193 GR B7 Fasteners Price in India
At Unifit Fastener we offer ASTM A193 Grade B7 fasteners in India at competitive prices so you get top quality without going over budget. These fasteners are made for strength, durability and performance which makes them a great fit for critical uses in oil and gas petrochemical and power generation industries. Whether you need bulk orders or something more specific we have cost effective options to match your needs. You can count on Unifit Fastener to deliver reliable ASTM A193 Grade B7 fasteners along with expert support and timely delivery.
Request QuoteFAQ’s About Astm A193 GR B7 Fasteners
What is ASTM A193 GR B7 material?
ASTM A193 Grade B7 is a heat-treated chromium-molybdenum alloy steel used to manufacture high-strength bolts and studs for high-temperature and high-pressure applications.
What is the difference between ASTM A193 Grade B7 and B8?
B7 is an alloy steel fastener designed for high-temperature strength, while B8 is stainless steel with superior corrosion resistance for corrosive or cryogenic environments.
What is ASTM A193 GR B7 standard?
The ASTM A193 Grade B7 standard defines the chemical, mechanical, and heat-treatment requirements for high-strength alloy steel fasteners used in pressure equipment and industrial piping systems.
In which applications is ASTM A193 Grade B7 commonly used?
It is commonly used for pressure vessels, piping systems, valves, flanges and fittings in sectors such as oil & gas, petrochemical, power generation and heavy engineering. Because of its high strength and temperature performance, it’s suited for demanding industrial environments.