A193 B7 Hex Head Bolts
A193 B7 hex head bolts are essential components in industrial and structural applications requiring high tensile strength, heat resistance, and performance under extreme conditions. Manufactured from high-grade chromium-molybdenum steel alloy, these bolts are often used in pressure vessels, valves, flanges, and fittings across the petrochemical, power generation, and oil & gas sectors. A193 B7 hex head bolts are compliant with ASTM A193 specifications, offering superior durability and load-bearing capacity for critical assemblies.
Product Overview
A193 B7 hex head bolts are heavy-duty fasteners designed to withstand high pressure and temperature environments. With a hexagonal head, these bolts offer excellent torque transmission, ensuring secure tightening in high-stress mechanical applications. Designed mainly for use in bolting pressure vessels, valves, and flanges for high temperature or high pressure services, they suit both industrial and commercial needs.
These bolts are widely recognized around the globe for their reliability and consistent performance in high-demand settings. Their strength, resistance to thermal expansion, and corrosion protection make them irreplaceable in critical operational systems.
Product Specification Table
| Parameter | Description |
|---|---|
| Product Name | A193 B7 Hex Head Bolts |
| Size Range | 1/4″ to 4″; M6 to M100 |
| Thread Type | UNC, UNF, Metric Threads |
| Material | Cr-Mo Alloy Steel (ASTM A193 B7) |
| Head Type | Hexagonal |
| Thread Direction | Right-hand |
| Length | 10mm – 500mm |
| Finish Options | Zinc Plated, Black Oxide, Hot-Dip Galvanized, Teflon |
| Packaging | Bulk, small box, pallet or OEM package |
Technical Parameters of A193 B7 Hex Head Bolts
| Specification | Value |
|---|---|
| Strength Grade | Grade B7 (Equivalent to SAE J429 Grade 5) |
| Tensile Strength | Min. 125 ksi (860 MPa) |
| Yield Strength | Min. 105 ksi (720 MPa) |
| Elongation | Min. 15% |
| Reduction of Area | Min. 35% |
| Surface Treatments | Zinc Plating, Hot-Dip Galvanized, Phosphate, Black Oxide, Dacromet |
| Standard Compliance | ASTM A193, ASME B18.2.1, ANSI, ISO 4032, DIN 933 |
| Certifications | ISO9001, IATF16949, CE, RoHS |
| Heat Treatment | Quenched and tempered |
Material and Manufacturing Process
The primary material used in A193 B7 hex head bolts is Chromium-Molybdenum alloy steel, offering superior high-temperature tensile strength and corrosion resistance. These bolts are manufactured using precision cold-forming or hot-forging techniques depending on size and strength requirements. The complete production process includes:
- Raw Material Inspection
- Forging (Cold Heading/Hot Forging)
- Threading (Rolling or Cutting process)
- Heat Treatment (Quench and Temper)
- Surface Treatment (Zinc, Black Oxide, etc.)
- Dimensional and Visual Inspection
- Packaging and Shipment
The meticulous production and quality assurance process ensures reliability and consistency across all delivered products.
Industries and Applications for A193 B7 Hex Head Bolts
A193 B7 hex head bolts are widely applied across multiple high-performance sectors, including:
- Oil & Gas – flanges, pump connections
- Power Generation – turbines, generators
- Petrochemical Plants – piping assemblies
- Shipbuilding – structural joints
- Heavy Machinery and Equipment
- High-pressure water and steam systems
- Construction – steel frame connections
They are indispensable where structural stability and high heat resistance are required.
Product Advantages & Market Competitiveness
A193 B7 hex head bolts from Flybear Fastener offer exceptional quality and performance.
- Superior Material: High-quality alloy steel for enhanced strength
- High Precision: Tight thread tolerances, uniform shank diameter
- Surface Protection: Multiple coatings for corrosion and weather resistance
- Customization: Ability to produce according to customer drawings or OEM requirements
- Reliable Supply Chain: Large inventory, fast delivery
- Top-notch Support: Experienced technical team and dedicated customer service
These features position our bolts as top-tier fastening solutions in the global market.
Testing & Quality Control of A193 B7 Hex Head Bolts
Flybear Fastener ensures strict compliance through an extensive quality control process:
- Thread Gauge Checks
- Tensile Strength Testing
- Salt Spray Corrosion Testing
- Hardness Testing
- Coating Thickness Measurement
- Optical Sorting for defect elimination
- Torque and Shear Load Testing
- Certification: ISO9001 and IATF16949 systems
Every product batch undergoes 100% inspection to ensure the highest conformity rate before shipment, supporting our promise of reliable performance.
A193 B7 Hex Head Bolts Selection & Purchasing Guide
When selecting A193 B7 hex head bolts, consider the following factors:
- Application environment: Temperature, pressure, and exposure
- Mechanical requirements: Tensile and yield strengths
- Thread type and fit: UNC, UNF, or metric
- Coating requirement: Based on corrosion resistance needs
- Size and Length: Based on structure and depth of installation
- Standard conformance required: ASTM, ISO, DIN, etc.
We recommend consulting with our technical team for custom sizing or specialized application requirements.
Conclusion and Company Promotion
We always follow the principle of “Quality First, Customer Foremost”, and remain committed to providing our clients with high-performance fastener products and one-stop solutions.
Whether you’re operating in petrochemical, construction, or power industries, Flybear Fastener has the manufacturing expertise and product range to fulfill your requirements. Feel free to contact us for a quote or to discuss the optimal fastener solution for your application. Explore our full product catalog or speak with a specialist today!
Follow Me!
