M12 X 180mm Hex Bolt

Shop customized m12 x 180mm hex bolt from Longan, which is one of the manufacturers and suppliers in China.The M12×180mm hexagonal bolt is a standard hexagonal head bolt with a nominal diameter of 12 millimeters and a length of 180 millimeters. It is widely used in heavy machinery, steel structure buildings, bridge engineering, power equipment, and industrial assembly lines, where high demands are placed on connection strength and stability. Its hexagonal head design facilitates quick installation and removal using wrenches or power tools, making it an indispensable basic fastening element in modern industry.

Core Performance and Technological Advantages

Based on over ten years of experience in fastener R&D and mass production, and combined with our customers' actual application scenarios, we optimize product design and manufacturing processes to provide you with the following core values:

1. High-Strength Materials, Strong Load-Bearing Capacity

- Material Options: Gangtong Zheli offers two main options: carbon steel (such as Grade 8.8 and 10.9) and stainless steel (A2-70, A4-80).

- Tensile Strength: Grade 10.9 products have a minimum tensile strength of 1040 MPa, suitable for high pre-tensioned connections.

- High Yield Strength: Effectively prevents plastic deformation and ensures long-term stability of the connection.

2. Precision Manufacturing Process, High Consistency

- Cold Heading Forming: The head is formed in a single cold heading process, resulting in continuous metal flow lines and superior strength compared to machining.

- Rolled Threads: Using a precision rolling process, the thread surface is smooth and burr-free, with a thread accuracy of 6g grade.

- Dimensional Control: M12 thread tolerances are strictly controlled within ±0.05mm, ensuring perfect fit with nuts.

3. Moderate Length, Wide Applicability

- 180mm Length Design: Suitable for multi-layer steel plates, thick flanges, heavy-duty brackets, and other scenarios requiring deep penetration connections.

- Customizable Extension: m12 x 180mm hex bolts support custom non-standard lengths, full thread or half thread structures to meet special assembly needs.

4. Diverse Surface Treatments, Strong Corrosion Resistance

- Carbon Steel Models Available:

- Zinc Plating (Blue/White/Color): Salt spray test ≥72 hours

- Dacromet: Chromium-free and environmentally friendly, corrosion resistance of over 500 hours

- Hot-Dip Galvanizing: Suitable for long-term outdoor exposure environments

- Stainless Steel Models: A4-80 (316 stainless steel) contains molybdenum, resistant to chloride ion corrosion, suitable for marine engineering and chemical equipment.

High and Low Temperature Resistance, Adaptable to Complex Environments

- Working Temperature Range: -50°C to +300°C

- Low strength degradation at high temperatures, suitable for connections in high-temperature equipment such as engines and boilers.

Typical Application Scenarios

Our M12×180mm hexagonal bolts have been successfully applied in several key projects:

Steel Structure Buildings: Used for steel beam and column connection nodes, ensuring overall structural stability.

Heavy Machinery: Connecting parts for excavator and crane chassis.

Bridges and Tunnels: Fixing of guardrails, supports, and embedded parts.

Power Transmission Towers: Bolt connections for transmission towers, resisting wind load and vibration.

Rail Transit: Rail fastening systems and signal equipment installation.

Why Choose Our M12×180mm Hexagonal Bolts?

Authoritative Certification, Traceable Quality

- Certified to ISO 9001, ISO 14001, and IATF 16949 (automotive grade) standards.

- Material certificates and test reports provided for each batch.

- Complies with multiple international standards including GB, DIN, ANSI, and JIS, and has been exported to Europe and the Americas for many years.

Advanced Production and Testing Capabilities

- Own cold heading, heat treatment, thread rolling, and surface treatment production lines.

- Equipped with professional equipment such as spectrometers, tensile testing machines, salt spray testing chambers, and hardness testers.

- Achieves full-process quality control from raw materials to finished products.

Customer Service and Technical Support

- Provides CAD drawings, torque recommendation tables, and installation specification documents.

- Supports sample delivery, batch customization, and OEM labeling services.

- Professional technical team provides online support to solve selection and usage problems.

Faq

Q1: What does "180mm" in M12×180mm hexagonal bolts refer to?

A: It refers to the total length of the bolt, which is 180 millimeters, the distance from the bottom of the bolt head to the end of the thread.

Q2: What is the difference between Grade 8.8 and Grade 10.9?

A: Grade 8.8 has a tensile strength of approximately 800 MPa, while Grade 10.9 has a tensile strength of 1040 MPa. The latter has higher strength and is suitable for higher load applications.

Q3: Is it possible to customize full-thread or extended versions?

A: Customization is supported. We can provide full-thread M12×180mm bolts or produce special structures according to drawings.

Q4: How to prevent bolts from loosening? A: It is recommended to use spring washers, lock nuts, or thread locking adhesive, and to regularly check the pre-tightening force.

Q5: What are the minimum order quantity and delivery time?

A: The minimum order quantity for standard products is 1000 pieces. Samples will be shipped in 3-5 days, and bulk orders in 7-15 days. Expedited shipping is available.