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18
+
YEARS OF EXPERIENCE
3000㎡+
FLOOR SPACE
160
+
MACHINERY EQUIPMENT
3500
+
SATISFIED CUSTOMERS
The NFE25511 contact washer features a unique serrated design that prevents bolts or nuts from loosening. Its single-sided serration design increases friction between the washer and the connected components, improves the stability of the connection, and prevents loosening.
Typically made from stainless steel and spring steel, the NFE25511 contact washer offers excellent corrosion resistance and mechanical strength. It also has some elasticity, which helps compensate for any material settling, reduces pressure loss, and ensures even stress distribution on the tightened parts.
They are widely used in applications that require high stability. They are also used in automotive connections, ensuring the parts do not loosen due to vibrations. In window and door installations, they can help them prevent loosening caused by long-term use or wind pressure. It is commonly used in electrical control cabinets, electrical equipment, communication devices, and other applications that require secure, stable connections.
The NFE25511 contact washer is widely adopted in industrial and electrical equipment, offering better anti-loosening performance than disc washers.
Specification
|
Specification |
d |
dc |
H |
h |
||
|
nom |
tolerance |
nom |
tolerance |
|||
|
3 |
3.35 - 3.1 |
8 |
±0.29 |
0.55 |
±0.03 |
0.8 - 1 |
|
4 |
4.1 - 4.4 |
10 |
±0.29 |
1 |
±0.05 |
1.15 - 1.4 |
|
5 |
5.1 - 5.4 |
12 |
±0.35 |
1.1 |
±0.05 |
1.45 - 1.8 |
|
6 |
6.1 - 6.4 |
14 |
±0.35 |
1.3 |
±0.05 |
1.75 - 2.1 |
|
8 |
8.2 - 8.58 |
18 |
±0.35 |
1.4 |
±0.05 |
1.9 - 2.35 |
|
10 |
10.2 - 10.56 |
22 |
±0.42 |
1.5 |
±0.05 |
2.25 - 2.75 |
|
12 |
13 - 13.43 |
27 |
±0.42 |
1.8 |
±0.05 |
2.6 - 3.1 |
|
14 |
14.4 - 14.83 |
30 |
±0.42 |
1.8 |
±0.08 |
3.2 - 3.7 |
|
16 |
16.4 - 16.83 |
32 |
±0.50 |
1.8 |
±0.08 |
3.6 - 4.1 |
Product Picture
Production Process
Quality Control
Surface Treatment
Offer a variety of surface treatments for our screws to meet different needs and environmental conditions. Such as zinc plating, nickel plating, hot-dip galvanizing, anodizing, zinc nickel alloy, dacromet coating, phosphating, etc.
Custom Service
With 18 years of experience in the fasteners area, Zeyao Hardware specializes in manufacturing custom fasteners, including screws, bolts, nuts, rivets, standoffs, spacers, wrenches, pins, and more. Welcome to send your inquiries to get a free quote.
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