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Product Description

Basic Information

Model NO.
M4
Groove
Cross
Connection
Common Bolt
Standard
DIN, GB, ANSI, BSW, JIS, GOST
Grade
8.8
Application
Machinery, Furniture, Buildings, etc
Delivery Time
5-15 Days
Strength Class
Level a
Transport Package
Bag and Tray
Specification
M4*20
Trademark
Customized
Capacity
400 Tons Per Month

Packaging & Delivery

Package Size
30.00cm * 20.00cm * 5.00cm
Gross Weight
1.500kg

Outstanding Services

Expert Manufacturers Fasteners meticulously designed to meet unique buyer specifications and performance standards.
Quality Assurance Rigorous durability testing and advanced technical designs ensuring an extended lifespan.
Cost-Effective Professional factory supply with competitive pricing backed by three decades of production expertise.
Custom-Tailored Customization services crafting ideal fasteners based on your samples and blueprints.

Product Classification

Main Product Specifications
MaterialPlastic, aluminum, iron, stainless steel: 201, 304, 316
StandardDIN, ASTM/ANSI JIS EN ISO, AS, GB
HardnessCarbon steel 4.8 - 12.9, Stainless steel A2-70
Head StyleRound, Flat (Countersunk), Cylindrical, Large flat, etc.
Groove TypeCross, One word, Inner/Outer hexagon, etc.
Surface TreatmentZinc (White/Blue/Color), Nickel, Chrome, Copper plating, Oxidation black
Thread ClassificationMachine thread, Self tapping, Double head, Whole/Half teeth
ShapesHexagonal, Round, Butterfly, Hook, U shape, Ring, etc.
Special ProcessingHardening, tip/flat tip, salt spray test, stamping parts

More than 30 years of professional production experience. Custom and free sample service available.

Product Display

Production Workshop

Application Scenarios

Quality & Packaging

Frequently Asked Questions

How do you ensure product quality control?
Our rigorous QC processes inspect every production link for each batch. We also provide MTC and mill certificates upon completion.
Are free samples available for testing?
For new clients, we offer free samples of standard fasteners, with express charges covered by the client. For loyal clients, we provide both free samples and cover shipping.
What is your typical delivery timeline?
Typically, if in stock, we deliver within 2-5 days. For 1-2 containers, expect 18-25 days. Urgent orders receive prioritization.
Can you accommodate small or custom orders?
Certainly, we welcome standard product small orders. We also specialize in custom-tailored fasteners based on your samples and blueprints.
What are your standard packing specifications?
Standard packing is 20-25 kg per carton, with 36 or 48 cartons per pallet. We also offer customized packaging including logos.
What makes your manufacturing services outstanding?
With three decades of production expertise and a professional management team, we provide cost-effective solutions and high-durability technical designs.

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