As a fastener manufacturer with 19 years of experience, Zeyao is equipped with over 160 high-precision production machines, with a monthly output exceeding 10 million pieces, capable of meeting both bulk purchasing and customization needs. We support OEM/ODM customization services, producing Serrated Conical Washers according to customer drawings or samples, ensuring product precision and performance meet global standards.
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19
+
YEARS OF EXPERIENCE
3000㎡+
FLOOR SPACE
160
+
MACHINERY EQUIPMENT
3500
+
SATISFIED CUSTOMERS
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Serrated Conical Washers are specially designed fastener accessories with a tapered structure and serrated grooves to enhance friction and prevent loosening when tightening bolts or nuts.
These washers are known for their stability, which maintains performance under high temperatures and harsh environments. They are ideal for use in industries such as automotive, bridge construction, railways, and heavy machinery.
These serrated conical washers are commonly used in heavy-duty vehicles, diesel engines, and other machinery. Their ability to prevent loosening due to vibration makes them essential in vibration-prone settings, providing a reliable connection in demanding applications.
Specification

|
Diameter |
dc |
h |
no. of teeth |
||
|
d |
min |
max |
|||
|
3 |
3.2 |
3.5 |
6 |
0.4 |
6 |
|
4 |
4.3 |
4.6 |
8 |
0.5 |
8 |
|
5 |
5.3 |
5.6 |
9.8 |
0.6 |
|
|
6 |
6.4 |
6.76 |
11.8 |
0.6 |
10 |
|
8 |
8.4 |
8.76 |
15.3 |
0.8 |
|
|
10 |
10.5 |
10.93 |
19 |
1 |
|
|
12 |
12.5 |
12.93 |
23 |
1 |
|
Product Picture






Product Advantages
Superior Anti-Loosening Performance:The serrated pattern and tapered design provide additional friction after bolt tightening, effectively preventing nuts or bolts from loosening under vibration and ensuring the stability of mechanical structures.
High Load-Bearing Capacity:The tapered structure distributes the load evenly under stress, reducing surface damage to fasteners while improving connection strength and overall load-bearing capacity.
Wear-Resistant and Durable:Made of high-quality carbon steel with heat-treated or coated surfaces, providing excellent wear and corrosion resistance and extending service life.
Suitable for High-Vibration Environments: Particularly suitable for automotive, machinery, heavy industry, and engineering structures, maintaining a secure fit under long-term vibration and impact conditions.
Multiple Material Options: Available in carbon steel, stainless steel, and alloy steel, with surface treatments including galvanizing, nickel plating, black anodizing, and hot-dip galvanizing to meet the needs of various working environments.
Quality Control









Vernier Caliper/Micrometer
Used to measure the outer diameter, length, thickness, and other dimensions of screws, nuts, and other parts.
Torque Meter
Checks whether the torque applied during tightening meets standards, ensuring safe and reliable use.
Depth Micrometer
Used to measure internal dimensions such as hole depth and groove depth to ensure precise assembly.
Plug Gauge
Checks the dimensions of threaded holes or fastener bores to ensure insertion and a tight fit.
Thread Gauge
Used to check thread accuracy to prevent problems such as stripping and sticking.
Ring Gauge
Tests the external thread dimensions of screws to ensure a proper fit with nuts.
Hardness Tester
Measures the hardness of fastener materials to determine whether they meet applicable standards.
Projector
Magnifies the outline of a product to check for any deviations or minor defects.
Salt Spray Tester
Simulates product use in humid or corrosive environments to test its rust and corrosion resistance.
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.

Contact Zeyao now to customize your high-performance Serrated Conical Washer!
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