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+
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3000㎡+
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160
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3500
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The pan head screws with an external-tooth lock washer are designed for reliability and security, especially in environments where vibration or frequent use could lead to loosening. The key feature of this screw is the external-tooth lock washer, which provides extra grip, preventing the screw from loosening or falling out. This is particularly effective in high-vibration or high-frequency usage settings.
The external teeth washer of the screw is designed to cut through the metal surfaces' paint or coating, which ensures better electrical conductivity. and it can also enhance the screw's holding power and reduces the risk of loosening, even in environments with frequent movement or vibration.
The pan head screws with an external-tooth lock washer are available in high-quality materials like carbon steel for strength or stainless steel for corrosion resistance, and are perfect for use in electrical conductivity environments, like electrical panels, metal enclosures, and machinery.
Specification
|
thread diameter * screw length |
tooth washer diameter |
head diameter |
head thickness |
|
M3*6 |
5.68 - 5.85 |
5.2 - 5.3 |
2.0 - 2.3 |
|
M3*8 |
5.68 - 5.85 |
5.2 - 5.3 |
2.0 - 2.3 |
|
M4*8 |
7.95 - 8.05 |
6.6 - 6.7 |
2.7 - 2.8 |
|
M4*10 |
7.95 - 8.05 |
6.6 - 6.7 |
2.7 - 2.8 |
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.

FAQ
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