M3 M4 M5 M6 M24 Dacromet Double Fold Self-Locking Washer DIN25201
Product Specifications
| Name | Metal Washer |
| Standard | DIN, ASME, ANSI, ISO |
| Material | Steel, Stainless steel, Brass, Copper, Titanium Alloy, Plastic |
| Place of Origin | China |
| Finish | Polish, Passivation, Black, Galvanization |
| Certificate | ISO9001:2008, ROHS |
Product Description
The M3 M4 M5 M6 M24 Dacromet Double Fold Self-Locking Washer is a high-performance fastener designed to protect connected surfaces, prevent fastener loosening, and serve various specialized purposes. These washers comply with DIN25201 standards and are available in multiple materials and finishes.
Types of Washers
- Flat washers (Class C, A, chamfered type)
- Large washers (Class A and C)
- High strength washers for steel structure
- Spherical and conical washers
- Various lock washers (internal/external tooth, serrated)
- Stop washers (single/double ear, outer tongue, round nut)
Working Principle
The self-locking washer consists of two washers with inner bevel tooth surfaces that create lifting tension when subjected to vibration, ensuring 100% locking. Flat washers increase contact area and disperse pressure, while spring washers provide additional friction between nut and bolt.
Applications
| Automotive | High-strength applications in engines and heavy-duty machinery |
| Mechanical | Connecting mechanical parts, circuit boards, engines, and transmissions |
| Energy | Power generation equipment and transmission line connections |
| Construction | Building structures, shipbuilding, and petrochemical equipment |
Material Specifications
Aluminum: Excellent thermal/electrical conductivity but requires careful processing
Titanium: Requires EDM machining with deionized water medium
Steel: High strength but generates significant heat during processing
Brass: High tensile strength but requires slow cutting speed
Feature Advantages
Non-metal Washers
Made of polymer materials (rubber, plastic) with excellent sealing and shock absorption properties, ideal for pipeline systems and electronic equipment.
Metal Washers
Constructed from steel, copper, or aluminum for high strength and corrosion resistance, suitable for high-temperature, high-pressure applications.
Composite Washers
Combine metal and non-metal materials for superior strength, corrosion resistance, and sealing performance, used in chemical and food processing equipment.
Company Information
Frequently Asked Questions
Q: Are you trading company or manufacturer?
A: We are factory and OEM are available.
Q: How long is your delivery time?
A: Generally 7-10 days if in stock, or 15-20 days for non-stock items depending on quantity.
Q: Do you provide samples?
A: Yes, we offer free samples but customers pay for freight.
Q: What are your payment terms?
A: 30% T/T in advance, balance before shipment or L/C.
For any other questions, please feel free to contact us.
