M4 X 39 mm Customized Mushroom Head Hollow Tubular Rivets

   Screws are generally called wood screws; is the tip of the kind of tip, pitch larger, generally used to tighten wood parts, plastic parts. Mechanical screws, is the front of the kind of screws, the pitch is small, uniform, generally used to fasten the metal, machine parts.Our products has high quality,and long life time.Our  company has passed ISO9001, ISO9001 (CQC) certification, product quality assurance.
Screw application range
1> stainless steel plate, metal plate, galvanized steel plate, engineering installation.
2> metal curtain wall metal light compartment and other indoor and outdoor installation. 
3> General angle steel, channel steel, iron plate and other metal materials combined installation. 
4> car trunk, container box, shipbuilding, refrigeration equipment and other assembly works.
5> automobile engine, heavy machinery, garden machinery, petrochemical.
6> aerospace, energy, machinery, chemical, military, metallurgy, mold, hydraulic.
7> motorcycles, sports equipment, cars and many other industries.
8> electronics, electrical appliances, motors, lighting, communications, home appliances, furniture.










Shipping  and  packaging
 Via Ocean shipping
North America, South America about 40 working days
Eastern Europe about 30-40 working days
Southeast Asia about 6-10 working days
Africa about 35-45 working days
India, Pakistan about 40 working days
Korea, Japan about 40 working days
Africa about 3-5 business days
Air transport
Other places around 1-3 business days
Packaging: boxes, cartons or plastic bags, or according to customer needs.

Sample service 
If  you need  sample,you need pay  the  freight.

Our factory














GB/T 65-2000                   
GB/T 67-2000
GB/T 68-2000
GB/T 69-2000
GB/T 70.1-200
 GB/T 70.2-2000
 GB/T 70.3-2000
 GB  71-85
 GB-72-88
 GB-73-85
 GB-74-85
 GB-75-85
 GB/T 77-2000
 GB/T 78-2000
 GB/T 79-2000
 GB/T 80-2000
 GB 83-88
 GB 84-88
 GB 85-88
 GB 86-88
 GB/T 818-2000
 GB 838-88
 GB 839-88
 GB 840-88
 GB 946-88
 GB 947-88
 GB 948-88
 GB 949-88  
 GB 2672-86
 GB 2673-86              
 GB 2674-86
 GB 5281-86    
GB/T 820-2000
GB/T 821-88
 GB/T 822-2000
 GB 823-88
 GB 825-88
 GB 828-88
 GB 829-88
 GB 830-88
 GB 831-88
 GB 832-88
 GB 833-88
 GB 834-88
 GB 835-88
 GB 836-88
GB 13-88
GB 14-1998
GB 15-88
GB 29.2-88
GB 35-88
GB 37-88
GB /T794-93
GB 798-88
GB 799-88
GB 800-88
DIN 125-A   GB 971-85
DIN 125-B   GB97.2-85
DIN127-A    GB7244
DIN 127-B   GB93-87
DIN 912    GB70-85
DIN933    GB-5783-86
DIN931     GB5782-86
DIN934     GB6170-86