Description
Product Overview
The uxcell M4 external tooth washers are precision‑engineered components designed to deliver reliable locking performance in a wide range of mechanical assemblies. Constructed from high‑grade 304 stainless steel, each washer resists corrosion, maintains structural integrity in humid or marine environments, and offers a long service life even under continuous vibration.
These washers feature an outer diameter of 8 mm (0.31 in), an inner diameter of 4.3 mm (0.17 in), and a total thickness of 1.5 mm (0.06 in) with a material thickness of 0.5 mm (0.02 in). The external tooth design creates a spring‑loaded locking action that firmly secures the nut or bolt head, preventing loosening caused by dynamic loads or thermal expansion.
Each package contains 70 pieces, providing ample inventory for both small‑scale repairs and large‑volume production runs. The washers are lightweight, measuring just 0.71 oz per package, and are packaged in a compact box measuring 3.74 × 2.44 × 0.63 in, making storage and handling straightforward.
Designed for compatibility with standard M4 and M5 fasteners, the washers can be used with a variety of screw sizes and thread pitches, offering flexibility across multiple industries. Their sleek silver finish not only adds a professional appearance but also aids in visual inspection during assembly.
![[Product front view showing all components]](https://www.artisanworks.store/wp-content/uploads/2026/07/a4aa8ea6728948dda0441e210d3efb9f.jpg)
Usage
These external tooth washers excel in industrial settings where equipment is subject to constant vibration, such as manufacturing machinery, conveyor systems, and heavy‑duty tools. Their robust locking capability ensures that critical connections remain secure, reducing downtime and maintenance costs.
Automotive technicians and marine engineers also benefit from the washers’ corrosion‑resistant properties. Whether securing engine components, chassis brackets, or marine hardware exposed to saltwater, the 304 stainless steel construction prevents rust and degradation, extending the lifespan of the fastened assemblies.
For DIY enthusiasts and hobbyists, the washers provide an easy‑to‑install solution that does not require specialized tools. Simply insert the washer onto the screw, tighten the nut, and the built‑in teeth will automatically engage, delivering a reliable lock that can be trusted in home improvement projects, furniture assembly, and outdoor equipment.
Because the washers are compatible with both M4 and M5 fasteners, they are suitable for a broad spectrum of applications, from electronic enclosures to agricultural machinery, making them a versatile addition to any fastener inventory.
Why Choose Us
Choosing uxcell means selecting a brand committed to quality, precision manufacturing, and customer satisfaction. Our external tooth washers undergo rigorous testing to verify dimensional accuracy, material hardness, and locking performance, ensuring each piece meets exacting industry standards.
We source premium 304 stainless steel from reputable suppliers, guaranteeing consistent composition and corrosion resistance. The manufacturing process incorporates fine craftsmanship and advanced stamping techniques, resulting in a uniform tooth profile that delivers consistent torque resistance across every washer.
Our dedication to after‑sales support includes responsive technical assistance, detailed product documentation, and a hassle‑free return policy. Should you encounter any issues or require guidance on proper installation, our knowledgeable team is ready to help.
By partnering with uxcell, you gain access to a reliable supply chain, competitive pricing, and a product line that is continuously refined based on customer feedback and evolving industry needs.
Key Features
- Corrosion‑resistant 304 stainless steel ensures long‑term durability in harsh environments.
- External tooth design provides a secure lock that resists vibration and loosening.
- Universal fit for M4 and M5 fasteners offers flexibility across many applications.
- Compact packaging of 70 pieces per box simplifies inventory management and reduces storage space.
- Responsive customer support and easy returns give peace of mind for every purchase.
FAQ
What size washers are included in the package?
The package contains 70 external tooth washers sized for M4 fasteners, each with an outer diameter of 8 mm, an inner diameter of 4.3 mm, and a thickness of 1.5 mm.
Can these washers be used with M5 bolts?
Yes, the washers are compatible with both M4 and M5 fasteners, allowing you to use them in a variety of thread sizes without compromising locking performance.
Are the washers suitable for outdoor or marine applications?
Absolutely. Made from 304 stainless steel, the washers resist rust and corrosion, making them ideal for outdoor equipment, marine hardware, and any environment exposed to moisture.
How do I install the external tooth washers?
Installation is straightforward: place the washer onto the screw or bolt, align the teeth with the nut, and tighten the nut. The teeth will automatically engage, creating a secure lock without the need for additional tools.
What warranty or support does uxcell provide?
uxcell offers a standard warranty covering material defects and provides responsive technical support. If you encounter any issues, contact our customer service team for assistance or a replacement.




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