Audited Supplier
M4*20
Carbon Steel
GB5787/5789/DIN6921
4.8/6.8/8.8/10.9/12.9
Galvanizing
Meiquan
Automobile and Motorcycle Industry
M4*20
Galvanized/Zinc
Meiquan
Zhejiang, China
Product Description
Product name | Quality Assurance High Strength Carbon Steel 4.8 Grade Plated Black Zinc M4 * 20 Flat Head External Hexagon Bolt |
Standard | ISO,DIN,JIS,ANSI,BSW,GB and non-standard fastener according to customers' drawing |
Machines | Auto pressing machines, automatic heading machine,CNC machines, cold header high-precision surface grinder machine, involantary grinder machines,Hardness tester, Electrolytic metrical thickness gauge, Vision Measuring Machine,Thickness Gauge and so on |
Surface Finishing | Zn- Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodized, Polish,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G. ) ,Brass Plating,Black Oxide etc. |
Heat Treatment | Tempering,Hardening,Spheroidizing,Stress Relieving |
Manufacture Process | Heading/Machining/Threading/heat treatment/plating/Baking/QA/Package/Shipping |
Sample | We can supply the samples for free,if the samples we have in stock |
Lead time | 7-15 working days as usual,It will based on the detailed order quantity |
After-sale service | we will follow up goods for every customer and help solve problem after sales. |
The packaging is defined on customer request. This is normally an external cardboard box, inside the pieces can be placed in plastic bags, loose, or in specially thermoformed panels. You can agree with us the packaging you prefer for your products.
