Product Introduction
Carbon steel 8.8-grade bolts are robust fasteners known for their high tensile strength, making them ideal for heavy-duty applications. They feature a fine precision thread and are extensively used in construction, automotive, and machinery industries where reliability and durability are paramount. These bolts ensure secure fastening, reducing the risk of loosening under load.
Product Advantage
High Tensile Strength: Designed to withstand forces up to 150,000 PSI, ensuring secure fastenings in tough conditions.
Corrosion Resistance Coating: Available with various coatings to protect against environmental wear, extending service life.
Precision Threading: Fine precision threading for consistent engagement, reducing the likelihood of stripping.
Quality Marking: Head markings for easy grade identification, ensuring quality control and authenticity.
Reliability in Industries: Trusted in industries like automotive and aerospace for their consistent performance under load.
Technical Parameters
| Material | Medium carbon alloy steel |
| Size Range | 1/4 inch to 1/2 inch
|
| Minimum Tensile Strength | 150,000 PSI
|
Minimum Yield Strength
| 130,000 PSI
|
Core Hardness Rockwell
| C33-C39
|
Chemical Composition
| Carbon 0.25% - 0.55%, Phosphorus max 0.035% |
Surface Finish
| Zinc plated, Plain, Hot dip galvanized |
Certification
| ISO certified, meets international standards |
Product Uses
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Industrial Machinery: As a core component in industrial machinery, these bolts offer the stability needed for the heavy and repetitive motion of machines, withstanding the rigors of manufacturing environments.
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Construction Projects: Essential in construction for securing steel beams and other structural components, these 8.8-grade bolts ensure the integrity and safety of buildings and infrastructure.
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Automotive Sector: Used in the automotive sector for engine assembly and chassis construction, these bolts provide the necessary strength to support the vehicle's weight and resist high torque.
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Heavy Equipment: Ideal for heavy equipment where bolts are subject to substantial pressure and vibration, these 8.8-grade bolts maintain fastenings in mining, agricultural, and construction equipment.
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Marine Applications: In marine applications where corrosion is a significant concern, these bolts' resistance to saltwater and humidity provides long-lasting reliability.
FAQ
Q1: What distinguishes grade 8.8 bolts from lower grade options?
A1: They provide greater tensile strength and are designed for demanding applications that require high durability.
Q2: Are these suitable for use in environments where corrosion is a concern?
A2: These bolts can be treated to resist corrosion, making them suitable for a range of environments, including marine.
Q3: What quality assurance tests are performed on these bolts?
A3: They are tested for tensile and yield strength to guarantee performance and reliability.
Q4: Do these bolts fit with standard hand tools?
A4: With standard thread sizes, these bolts are compatible with most hand tools commonly used in the industry.
Q5: What surface treatments are there to improve bolt longevity?
A5: Options such as hot dip galvanization and zinc plating are provided to enhance the bolts' resistance to wear.
