M12 Hex Bolt: A Comprehensive GuideUnderstanding the nuances of M12 hex bolts is crucial for various applications. This guide provides in-depth information, covering specifications, materials, applications, and selection criteria. We'll explore the differences between various grades and highlight considerations for ensuring safe and effective use.
M12 Hex Bolt Specifications
The designation
M12 hex bolt itself provides initial information. M12 refers to the nominal diameter of the bolt, which is 12 millimeters. The hex indicates the bolt head shape, featuring six sides. However, several other specifications are critical for selecting the right bolt for your project. These include:
Thread Pitch
The thread pitch, or distance between each thread, varies. Common thread pitches for
M12 hex bolts include 1.25mm and 1.75mm. Choosing the correct pitch ensures proper engagement and prevents damage.
Bolt Length
The length of the bolt is measured from the underside of the bolt head to the end of the threaded section. Accurate length selection is essential for proper fastening and ensuring sufficient thread engagement. Overly long bolts can be problematic, while too-short bolts can compromise strength and stability.
Material Grade
The material grade significantly impacts the bolt's strength and durability. Common materials include:
| Material Grade | Tensile Strength (MPa) | Typical Applications |
| 4.8 | 400 | General purpose applications |
| 8.8 | 800 | Higher-strength applications |
| 10.9 | 1040 | High-strength applications requiring superior reliability |
Note: Tensile strength values can vary slightly depending on the manufacturer. Always refer to the manufacturer's specifications for precise data.
Surface Finish
The surface finish can impact corrosion resistance and overall durability. Common finishes include zinc plating, black oxide coating, and others.
Applications of M12 Hex Bolts
M12 hex bolts are incredibly versatile and find applications in numerous industries, including:
Automotive
They are commonly used in various automotive components, from chassis assemblies to engine mounts.
Machinery
M12 hex bolts are essential in securing parts in machinery, ensuring stability and functionality.
Construction
In construction, these bolts are used in structural applications, securing various components within buildings and structures.
General Engineering
Beyond specific industries,
M12 hex bolts play a crucial role in various general engineering applications.
Selecting the Right M12 Hex Bolt
Choosing the correct
M12 hex bolt is crucial for ensuring structural integrity and safety. Consider the following: Material: Select a material grade appropriate for the application's load requirements and environmental conditions. Thread pitch: Ensure compatibility with the mating nut and application. Bolt length: Choose a length that provides adequate thread engagement without excessive protrusion. Surface finish: Select a finish that offers suitable corrosion protection.
Where to Find Quality M12 Hex Bolts
For high-quality
M12 hex bolts and other fasteners, consider sourcing from reputable suppliers.
Hebei Dewell Metal Products Co., LTD offers a wide range of fasteners, meeting various industry standards.
Disclaimer: This information is for general guidance only. Always consult relevant industry standards and manufacturer specifications before using M12 hex bolts in any application.
