DIN6921 Blue-White Zinc Plated Hexagon Head Flange Bolt
Basic Info.
Material | Carbon Steel | Type | Hexagon Head |
Surface | Blue-white Zinc Plated | Connection Method | Flanged |
OEM/ODM | We accept OEM/ODM | Specification | M5-M20 |
Standard | GB5789/GB5787/DIN6921 | Trademark | Grand |
Thread specification | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | |
b | L≤120 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 46 |
120＜L≤120 | —— | —— | 28 | 32 | 36 | 40 | 44 | 52 | |
dc max | 11.8 | 14.2 | 18 | 22.3 | 26.6 | 30.5 | 35 | 43 | |
k max | 5.4 | 6.5 | 8.1 | 9.2 | 10.4 | 12.4 | 14.1 | 17.7 | |
s | max | 8 | 10 | 13 | 15 | 18 | 21 | 24 | 30 |
min | 7.64 | 9.64 | 12.57 | 14.57 | 17.57 | 20.16 | 23.16 | 29.16 | |
ds | max | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
min | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | |
Blue and white zinc flange bolts are a common type of fastener that utilizes a blue and white zinc coating to provide corrosion and wear resistance. The following is a detailed description of the material and application path of blue and white zinc flange bolts.
Strengths：
1. Sufficient thickness of the hexagonal edge, smooth and full, with clear angles;
2. Bolt end chamfer size, easy to assemble;
3. The outer diameter of the thread meets the go/no-go gauge，to ensure stability during fastening.
Material:
Blue and white zinc flange bolts are usually made of carbon steel or alloy steel to ensure their strength and durability. Carbon steel has good malleability and mechanical properties, while alloy steel provides higher strength and corrosion resistance.
Plating:
One of the features of blue and white zinc flange bolts is their blue and white zinc plating. The coating is applied to the surface of the bolt by electroplating, which can effectively prevent oxidation, corrosion and wear. The blue-white zinc coating has good appearance, uniform thickness and excellent anti-corrosion properties.
Application:
Blue and white zinc flange bolts are widely used in mechanical assemblies and engineering structures in various fields. Specific applications include but are not limited to:
- Construction industry: used to connect steel frames, beams and columns and other components in building structures to increase their stability and safety.
- Automobile manufacturing industry: fasteners used in automobile assembly, such as engine, chassis and body parts fixing.
- Power equipment: used for the installation and maintenance of equipment such as transmission lines, transformers and cable bridges.
- Mechanical Manufacturing: Used in the manufacture of mechanical equipment, tools and instrumentation, etc. to ensure the firmness and reliability of the assembly.
In short, blue and white zinc flange bolts are widely used in various industries for their excellent anti-corrosion and wear-resistant properties. Whether in construction, automobile manufacturing or power equipment, blue and white zinc flange bolts can provide reliable fastening solutions.