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M3, Nylon Insert Hex Lock Nuts, 304 Stainless Steel, Bright Finish, Coarse Thread, Machinery, Automotive, Outdoor, Wooden Furniture, 50 PCS

Free shipping on orders over $29.99

$5.32

$ 1 .99 $1.99

In Stock

1.Size:M4


2.:4


About this item

  • Package Details: Includes 50 PCS, M3 Nylon Insert Hex Lock Nuts, 304 Stainless Steel, Coarse Thread. Comes in a reusable case to reduce waste.
  • Reliable Performance: Nylon inserts firmly grip threads, preventing loosening from vibration or shock. No additional washers are required, and the design also provides a leakproof seal.
  • Durable Material and Finish: Made from rust-resistant 304(A2-70) stainless steel with a smooth, burr-free, and polished finish. Suitable for furniture, DIY, 3D Printing, lumber and outdoor use, offering a clean and professional appearance.
  • Versatile Applications: Ideal for outdoor furniture, machinery, construction projects, and seasonal equipment. Effectively combat rust, designed to endure harsh conditions and deliver long-term reliability.
  • Customer Support: Includes the promised quantity with consistent quality, Ideal for bulk needs. Got questions? Our dedicated team is ready to assist you within 24 hours.


This product features Nylon Insert Hex Lock Nuts made of 304 stainless steel, providing excellent corrosion resistance.

Ideal for various applications, including outdoor furniture, machinery, and construction projects.

The nylon insert design ensures a secure grip on threads, preventing loosening caused by vibration or shock for reliable connections.



Key Features

  • Premium Material: Made of 304 stainless steel, tested for resistance to rainwater and saltwater exposure. Features a smooth, burr-free for durability in harsh environments.
  • Eco-Friendly Packaging: Comes in a reusable storage case that helps organize and protect small parts from accidental loss.
  • Precise Dimensions: Each nut is manufactured with accurate threading and dimensions, ensuring compatibility for both everyday and professional use.
  • Versatile Applications: Ideal for household repairs, outdoor projects, and industrial tasks, meeting diverse needs with consistent performance.



All products are verified by a professional thread checker to ensure quality and standard compliance. For any questions, our dedicated customer support team is available to assist within 24 hours.


Q&A

Q: Are these lock nuts suitable for use in outdoor or humid environments?

A: Yes! These 304 stainless steel lock nuts are highly corrosion-resistant, making them ideal for use in outdoor and humid environments. They are Ideal for projects like outdoor furniture, machinery repairs, and other applications exposed to moisture.



Q: How durable are the nylon inserts in these lock nuts?

A: The nylon insert provides excellent anti-loosening performance, making these lock nuts ideal for applications involving vibrations or shocks. For optimal performance, we recommend checking the condition of the lock nuts after repeated use to ensure they continue to perform as expected.



Q: Can these lock nuts be used on different materials?

A: Yes! These lock nuts are versatile and can be used on a variety of materials, including metal, wood, and plastic. They provide a secure, tight hold for applications like furniture assembly, automotive repairs, and small machinery tasks.



Q: What if the lock nuts don't fit my bolts?

A: To ensure the correct fit, please use a calipers to double-check the size of your bolts according to our dimension diagram. If you need assistance or the wrong size is ordered, feel free to reach out to us, and we will gladly assist you with exchanges or help you find the right product.



Q: How can I maximize the effectiveness of these lock nuts?

A: When using power tools like an electric drill or wrench, adjust the torque to the recommended setting for your project. Using too much force can damage the nylon insert or the nut, while too little may prevent the lock nut from securing properly. Proper torque helps ensure stable performance in vibration-prone environments.


Thomas N.
Reviewed in the United States on March 30, 2025
Normally with those little metric nut and bolt kits you get, they don't include nylock nuts. This kit is a great addition for makers like me to have nylock nuts on standby. They work as expected, and cover your usual trinket/gizmo/contraption project bolt sizes.If I knew I'd need a lot of nylock nuts I'd get a big pack in the size I need, but this set is a good way to keep some on hand for the off chance I need them.
John L.
Reviewed in the United States on January 9, 2025
This is a nice assortment of 304 SS metric lock nuts to have on hand for various projects.I tested these with a strong magnet. 304 SS should only have a slight magnet attraction which they did - not strong but slight. I've tested plenty of items that are advertised as 304 SS that had a very strong magnetic attraction and believed they were either a lower grade of SS or composed of something else.A nice product.