Professional Washer Manufacturer | China Washer Factory & Global Supplier
Washers are crucial basic components in fastening systems, widely used in building steel structures, machinery, automotive manufacturing, electrical systems, and heavy industry. In bolted connections, the core function of washers is to distribute loads, reduce stress concentration at the contact surface, and prevent loosening or damage to the connection due to vibration or prolonged stress.
As a professional China Washer Factory, we specialize in producing various standard and custom washers, providing stable and reliable fastening solutions to customers worldwide. Our products are widely used in automotive manufacturing, electronics, construction, aerospace, industrial machinery, medical devices, furniture, home furnishings, railway transportation, and many other industries.
Huizhou Zeyao Hardware Products Co., Ltd. has been professionally manufacturing non-standard fasteners for 19 years, including screws, bolts, nuts, washers, pins, gaskets, supports, rivets, CNC milled parts, and CNC turned parts.
Rich Experience
Established in 2006, Huizhou Zeyao Hardware Products Co., Ltd. has accumulated over 18 years of expertise in manufacturing high-quality fasteners.
Quality Control
All our products comply with ROHS standards, and we maintain a stringent quality control system throughout the entire production process to ensure superior product quality.
Customized Services
We offer tailored solutions based on customer requirements, providing customized production according to specific drawings or samples.
Advanced Production Technology
Our production capabilities encompass cold forming, automatic lathing, automatic milling, and CNC machining, enabling us to meet diverse customer needs efficiently.
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![DIN 6795 Stainless Steel Grounding Washers]()
DIN 6795 Stainless Steel Grounding Washers-Material: Stainless Steel 304, Stainless Steel 316, 65Mn Steel zinc platedview more
-Standard: DIN7965
-Surface finish: Passivated or zinc plated,Decomet,Nickel plating
-For screw:... -
![Plastic Peek Washer]()
Plastic Peek WasherMaterial:Peekview more
For screw: M2-M30, #0-#12
ID: Customized
OD:Customized
Thickness: Customized
Temperature Range :Minimum-50° F, Maximum 500°... -
![Red Fibre Flat Washers]()
Red Fibre Flat WashersRed Paper Washer; Red Fibre Washerview more
Material: Fibre
Finish: Plain
Size: Customize -
![External Tooth Washer]()
External Tooth WasherMaterial: Carbon steelview more
Size: Customizable
Surface Treatment: Galvanizing, Nickel plating, Blackening, Dacromet coating, Electrophoresis, Hot-dip galvanizing, etc.
Manufacturer:... -
![Internal and External Tooth Washer]()
Internal and External Tooth WasherThe internal and external tooth washer is a special type of washer， which is designed with inner and outer teeth. This design increases the friction between the washer and the connected...view more -
![DIN25201 Wedge Lock Washer]()
DIN25201 Wedge Lock WasherThe DIN25201 wedge lock washer features a unique embedded design with a wedge angle, which increases the tension on the bolt to prevent loosening. When exposed to vibration, the washer’s angled...view more -
![Rubber Bonded Metal Washers]()
Rubber Bonded Metal WashersThe rubber bonded metal washers combine the durability of metal with the flexibility of rubber, making them ideal for a wide range of applications. The metal layer can withstand high temperatures...view more -
![DIN6795 Contact Washer]()
DIN6795 Contact WasherThe DIN6795 contact washer is designed with six-pronged points that can break through the metal surface when the bolt or screw is tightened. This feature helps prevent loosening and ensures a...view more -
![Conical Belleville Spring Washer]()
Conical Belleville Spring WasherThe conical belleville spring washer is a widely used mechanical component in many types of machinery. Its main function is to provide preload, preventing bolts or screws from loosening. The...view more -
![Spring Split Lock Washer]()
Spring Split Lock WasherMaterial: Stainless Steel (304/316)view more
Manufacturer: Zeyao
Surface Treatment: Zinc plating, nickel plating, black anodizing, phosphating
Color: Natural metallic color or custom... -
![E Type External Circlip]()
E Type External CirclipE-Type External Circlips are common shaft fasteners, also known as E-type retaining rings or E-type snap rings. They feature a unique "E"-shaped structure that securely holds the component within...view more -
![Crescent Rings]()
Crescent RingsThe crescent rings, also known as C-shaped circlips, are spring fasteners shaped like the letter “C.” They are designed to fit into shafts or holes, using their elasticity to prevent axial...view more
Specification
|
Washer Size |
Metric Thread |
UNC Thread |
Inner Diameter (d) |
Inner Diameter (d) - Tolerance |
Outer Diameter (dc) |
Outer Diameter (dc) - Tolerance |
Thickness (h) |
Thickness (h) - Tolerance |
|
NL3 |
M3 |
#5 |
3.4 |
±0.1 |
7 |
±0.2 |
1.8 |
±0.25 |
|
NL4 |
M4 |
#8 |
4.4 |
7.6 |
1.8 |
|||
|
NL4sp |
M4 |
#8 |
4.4 |
9 |
1.8 |
|||
|
NL5 |
M5 |
#10 |
5.4 |
9 |
1.8 |
|||
|
NL5sped) |
M5 |
#10 |
5.4 |
10.8 |
1.8 |
|||
|
NL6 |
M6 |
1/4 |
6.5 |
10.8 |
1.8 |
|||
|
NL6sp |
M6 |
1/4 |
6.5 |
13.5 |
1.8 |
|||
|
NL8 |
M8 |
5/16 |
8.7 |
13.5 |
1.8 |
|||
|
NL8sp |
M8 |
5/16 |
8.7 |
16.6 |
2.5 |
|||
|
NL10 |
M10 |
7/16 |
10.7 |
±0.2 |
16.6 |
2.5 |
||
|
NL10sp |
M10 |
7/16 |
10.7 |
21 |
2.5 |
|||
|
NL11 |
M11 |
7/16 |
11.4 |
18.5 |
2.5 |
|||
|
NL12 |
M12 |
1/2 |
13 |
19.5 |
2.5 |
|||
|
NL12sp |
M12 |
1/2 |
13 |
25.4 |
3.4 |
|||
|
NL14 |
M14 |
9/16 |
15.2 |
23 |
3.4 |
|||
|
NL14sp |
M14 |
9/16 |
15.2 |
30.7 |
3.4 |
|||
|
NL16 |
M16 |
5/8 |
17 |
25.4 |
3.4 |
|||
|
NL16sp |
M16 |
5/8 |
17 |
30.7 |
3.4 |
|||
|
NL18 |
M18 |
|
19.5 |
29 |
3.4 |
|||
|
NL18sp |
M18 |
|
19.5 |
34.5 |
3.4 |
|||
|
NL20 |
M20 |
|
21.4 |
30.7 |
3.4 |
|||
|
NL20sp |
M20 |
|
21.4 |
39 |
3.4 |
|||
|
NL22 |
M22 |
7/8 |
23.4 |
34.5 |
3.4 |
|||
|
NL22sp |
M22 |
7/8 |
23.4 |
42 |
4.6 |
|||
|
NL24 |
M24 |
|
25.3 |
39 |
3.4 |
|||
|
NL24sp |
M24 |
|
25.3 |
48.5 |
4.6 |
|||
|
NL27 |
M27 |
|
28.4 |
42 |
±0.3 |
5.8 |
0 |
|
|
NL27sp |
M27 |
|
28.4 |
48.5 |
6.6 |
|||
|
NL30 |
M30 |
1-1/8 |
31.4 |
47 |
5.8 |
|||
|
NL30sp |
M30 |
1-1/8 |
31.4 |
58.5 |
6.6 |
|||
|
NL33 |
M33 |
1-1/4 |
34.4 |
48.5 |
5.8 |
|||
|
NL33sp |
M33 |
1-1/4 |
34.4 |
58.5 |
6.6 |
|||
|
NL36 |
M36 |
1-3/8 |
37.4 |
55 |
5.8 |
|||
|
NL36sp |
M36 |
1-3/8 |
37.4 |
63 |
6.6 |
|||
|
NL39 |
M39 |
1-1/2 |
40.4 |
58.5 |
5.8 |
|||
|
NL42 |
M42 |
|
43.2 |
63 |
5.8 |
|||
|
NL45 |
M45 |
1-3/4 |
46.2 |
±0.5 |
70 |
0 |
7 |
±0.75 |
|
NL48 |
M48 |
|
49.6 |
75 |
7 |
|||
|
NL52 |
M52 |
2 |
53.6 |
80 |
7 |
|||
|
NL56 |
M56 |
2-1/4 |
59.1 |
85 |
7 |
|||
|
NL60 |
M60 |
|
63.1 |
90 |
7 |
Types of Washer
The washers produced by our company mainly include the following types:
Lock Washer
A lock washer is a specialized type of washer designed to prevent fasteners like bolts and screws from loosening due to vibrations or other forces. They achieve this by creating tension or friction between the fastener and the surface it's installed on, keeping the connection tight.
Spring Washer
A spring washer is a fastener component with a curved or wavy shape that provides a spring-like action when compressed. They are designed to create tension and preload in a joint assembly, preventing loosening due to vibration or dynamic loads.
Retaining Ring
A retaining ring is a type of fastener that secures parts together, often by creating a shoulder to prevent components from moving out of position within a housing or on a shaft. These rings are typically made of metal and come in various forms, such as E-clips, snap rings, or circlips, with internal or external designs.
Applications of Washer
Load Distribution
Fasteners exert high levels of force when installed. Washers help to distribute that load to prevent damage to the material. Without washers, materials are more likely to crack due to tightening pressure.
Spacing
If the length of the bolt or screw is greater than the object’s thickness, it is impossible to sufficiently tighten the fastener without the screw protruding from the other side. By adding washers, you can create enough space to prevent the fastener from going too far into the substrate.
Absorbing Vibrations
Washers made from plastic or rubber absorb vibrations in high vibration applications. Vibration reduction keeps the fasteners from loosening over time and helps to protect the attached equipment from vibration damage.
Sealing Connections
Washers can be used to seal joints on piping, tubing, and ductwork, to create a waterproof seal that prevents gas or fluid leakage.
Materials Used To Make A Washer
|
Characteristics |
Stainless steel |
Aluminum |
Copper |
Brass |
Galvanized steel |
|
Resists compression |
✔ |
✔ |
|
|
✔ |
|
Resists shearing, bending & cracking |
✔ |
✔ |
|
|
✔ |
|
Resists corrosion |
✔ |
✔ |
✔ |
✔ |
✔ |
|
Ductility/malleable |
|
|
✔ |
✔ |
|
|
Conducts electricity |
✔ |
✔ |
✔ |
✔ |
✔ |
|
Good sealing capability |
|
|
✔ |
✔ |
|
Shapes Of Washers
As their intended purpose, these washers have a precise, parallel plane between the bolt head and the nut face. Spherical washers automatically correct and balance the angular misalignment between the planes while guarding against bolt bending. Examples include fender, slotted, countersunk, and flat washers.
Compared to round washers, square washers have a higher surface area, which improves torque distribution. They help in corrosion resistance and rotation prevention. Additionally, they are employed to restrict electrical current, vibration, and sound for usage in seismic applications.
These washers are also known as insulator washers. They are non-metallic, often made of nylon. Shoulder washes typically come with a long or short barrel. They protect fasteners from moisture and dirt.
Usually made from metals, wave washers are often curved in two directions. They function primarily as spacers or cushions; when compressed, they help sustain loads and maintain fastener tension. An example is the wave washer.
Designed to slide in and out of position on a bolt without necessarily loosening it, C-washers find use as a retention device on a grooved shaft. They help keep components in place. Examples include the lock and slotted washer.
Proper Installation of Washers
Match Washer Size to Screw Size
Always ensure that the washer size matches the screw size. This ensures a proper fit and prevents any potential issues down the line.
Placement Matters
Place the washer directly under the screw head or nut. This positioning maximizes its effectiveness by evenly distributing pressure to help prevent damage to the underlying material.
Tighten Gradually and Evenly
When tightening screws, it's crucial to do so gradually and evenly. Avoid rushing or applying excessive force as this may damage the washer or distort its shape.
Use Appropriate Tools
To achieve optimal tightening without overloading or stripping threads, use a torque wrench or suitable tool for your specific application. This ensures consistent results and avoids unnecessary complications.
Packaging and Shipping
|
Packaging |
Plastic bag + outer carton + pallets |
|
Shipping |
We will help you to choose the best shipping way according to your detail requirements. By sea, by air, or by express, etc. |
Our Certificate
FAQ
We're professional washer manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale customized washer made in China here from our factory.
