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SS304 Hex Head Bolt
QS Fastener: SS304 Hex Head Bolt
Name: SS304 Hex Head Bolt
Thread: ASME B1.1, 7 UNC
Standard: ANSI B18.2.1
Material: ASTM A193 Gr B8 Cl2, SS304
Size: 1-1/8 Inch
Length: 3.75 Inch
Thread Length: Hex Head Cap screw Thread 65 mm
Thread: ASME B1.1, 7 UNC
Standard: ANSI B18.2.1
Material: ASTM A193 Gr B8 Cl2, SS304
Size: 1-1/8 Inch
Length: 3.75 Inch
Thread Length: Hex Head Cap screw Thread 65 mm
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SS304 Hex Head Bolt: The Perfect Combination of Strength and Durability! The SS304 Hex Head Bolt is made from ASTM A193 Gr B8 Cl2 and SS304 stainless steel, offering excellent corrosion resistance and high strength, making it suitable for various demanding environments. With a size of 1-1/8 inches and a length of 3.75 inches, it complies with the ASME B1.1, 7 UNC thread standard. The hexagonal head design with 65 mm thread length facilitates installation and provides stable torque control. Compliant with the ANSI B18.2.1 standard, it ensures superior quality and is widely used in construction, manufacturing, and industrial fields. Choose the SS304 Hex Head Bolt for a durable and reliable solution for your projects!
How to Select the SS304 Hex Head Bolt?
Below are the application environments and selection recommendations for different grades of SS304 Hex Head Bolt:
Below are the application environments and selection recommendations for different grades of SS304 Hex Head Bolt:
1. Class 1: Suitable for Low-Pressure, Low-Temperature, or Vibrational Environments
1.1 Application Scenarios
Food Equipment: Used for bolted connections in food processing equipment, such as mixers, conveyors, and storage tanks;
Building Structures: Used for bolted connections in steel structures, such as bridges, curtain walls, and pipe supports;
Vibrational Environments: Suitable for mechanical equipment with vibrations, such as fans and pumps.
1.1 Application Scenarios
Food Equipment: Used for bolted connections in food processing equipment, such as mixers, conveyors, and storage tanks;
Building Structures: Used for bolted connections in steel structures, such as bridges, curtain walls, and pipe supports;
Vibrational Environments: Suitable for mechanical equipment with vibrations, such as fans and pumps.
1.2 Material Properties
Material: 304 stainless steel (ASTM A193 B8 Class 1);
Material: 304 stainless steel (ASTM A193 B8 Class 1);
Mechanical Properties:
Tensile Strength: ≥515 MPa;
Yield Strength: ≥205 MPa;
Elongation: ≥40%;
Hardness: ≤192 HB (Rockwell B90).
Tensile Strength: ≥515 MPa;
Yield Strength: ≥205 MPa;
Elongation: ≥40%;
Hardness: ≤192 HB (Rockwell B90).
Corrosion Resistance: Suitable for weakly corrosive environments, such as air, freshwater, weak acids, and weak alkalis.
1.3 Data Comparison
| Performance Indicator | Class 1 (SS304 Hex Head Bolt) | Comparative Material (Carbon Steel) |
| Tensile Strength (MPa) | 515 | 400–550 |
| Yield Strength (MPa) | 205 | 250–350 |
| Elongation (%) | ≥40 | 20–30 |
| Corrosion Resistance | Excellent | Poor |
1.4 Advantages
High Ductility: Elongation ≥40%, ideal for vibrational environments;
Corrosion Resistance: The SS304 Hex Head Bolt performs excellently in weakly corrosive environments;
Cost-Effectiveness: Lower cost than Class 2, suitable for budget-limited projects.
High Ductility: Elongation ≥40%, ideal for vibrational environments;
Corrosion Resistance: The SS304 Hex Head Bolt performs excellently in weakly corrosive environments;
Cost-Effectiveness: Lower cost than Class 2, suitable for budget-limited projects.
2. Class 2: Suitable for High-Pressure and High-Temperature Environments
2.1 Application Scenarios
Flange Connections: Used for bolted connections in pipelines, valves, and pumps (ASME B16.5 standard);
Boiler Systems: Used for bolted connections in low-pressure boilers;
Heat Exchangers: Used for bolted connections in low-pressure heat exchangers.
2.2 Material Properties
Material: 304 stainless steel (ASTM A193 B8 Class 2);
Mechanical Properties:
Tensile Strength: ≥860 MPa;
Yield Strength: ≥690 MPa;
Elongation: ≥12%;
Hardness: 248–352 HB (Rockwell C25–35).
Corrosion Resistance: Suitable for weakly corrosive environments but requires caution in high Cl⁻ environments.
Material: 304 stainless steel (ASTM A193 B8 Class 2);
Mechanical Properties:
Tensile Strength: ≥860 MPa;
Yield Strength: ≥690 MPa;
Elongation: ≥12%;
Hardness: 248–352 HB (Rockwell C25–35).
Corrosion Resistance: Suitable for weakly corrosive environments but requires caution in high Cl⁻ environments.
2.3 Data Comparison
| Performance Indicator | Class 2 (SS304 Hex Head Bolt) | Comparative Material (Alloy Steel) |
| Tensile Strength (MPa) | 860 | 800–1000 |
| Yield Strength (MPa) | 690 | 600–800 |
| Elongation (%) | ≥12 | 10–15 |
| Corrosion Resistance | Excellent | Average |
2.4 Advantages
High Strength: Tensile strength ≥860 MPa, ideal for high-pressure and high-temperature environments;
Corrosion Resistance: The SS304 Hex Head Bolt performs excellently in weakly corrosive environments;
Reliability: Strain-hardened, suitable for heavy-load scenarios.
High Strength: Tensile strength ≥860 MPa, ideal for high-pressure and high-temperature environments;
Corrosion Resistance: The SS304 Hex Head Bolt performs excellently in weakly corrosive environments;
Reliability: Strain-hardened, suitable for heavy-load scenarios.
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