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The locknuts with an external-tooth lock washer is a unique fastener designed to combine the functions of a washer and a nut in one reliable component. With its large flange design on one end and serrated teeth on the underside, this locking nut significantly increases the contact area with the surface of the workpiece, providing enhanced stability and locking power.
The broad flange at the base of the nut features serrated teeth that dig into the surface of the workpiece, providing a firm grip. This serration ensures that the nut won't loosen, even under high vibration or shock. The serrated teeth can increase surface contact and evenly distribute the pressure, creating a powerful locking effect. This design prevents the nut from loosening due to vibrations, impacts, or external forces. The precise tooth structure reduces wear on the nut, extending its service life.
The locknuts with an external-tooth lock washers are perfect for use in machinery, automotive, aerospace, and railway industries where vibrations can cause standard fasteners to loosen over time. Used in vehicles, trains, ships, and aircraft to ensure that critical parts stay locked in place despite continuous movement and vibration.
The locknuts with an external-tooth lock washer offers a powerful and reliable fastening solution, ensuring that your connections remain tight and secure, even in the most demanding conditions. Whether in high-vibration machinery, heavy-duty equipment, or extreme environmental settings, this locknut will keep your components firmly in place.
Specification

|
Specification |
Pitch |
m |
s |
dc |
|
M3 |
0.5 |
3.7 |
5.5 |
7.8 |
|
M4 |
0.7 |
4.4 |
6.8 |
9.9 |
|
M5 |
0.8 |
4.8 |
7.8 |
11.3 |
|
M6 |
1 |
5.8 |
9.8 |
12.48 |
|
M8 |
1/1.25 |
7.7 |
12.7 |
17.5 |
|
M10 |
1.25/1.5 |
9.7 |
14.6 |
21.05 |
|
M12 |
1.25/1.5/1.75 |
11.7 |
17.6 |
25.2 |
|
M14 |
2 |
13.6 |
20.7 |
29.5 |
|
M16 |
2 |
15.5 |
23.7 |
33.3 |
|
M20 |
2.5 |
19.3 |
30.7 |
41.9 |
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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