Nylock Nuts

Part No: N/A Category:

$0.38 - $1.75

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Nylock Nuts

Nylock nuts are available in zinc and galvanised for corrosive applications.

Bulk Buy Available

Available sizes

  • 3/8-inch Zinc – UNF Thread – 100 per box
  • 7/16-inch Zinc – UNF Thread – 100 per box
  • 9/16-inch Zinc – UNF Thread – 100 per box
  • 5/8-inch Zinc – UNF Thread – 100 per box
  • 1/2-inch Zinc – BSW Thread – 100 per box
  • 1/2-inch Galvanised – BSW Thread – 100 per box
  • 16mm – Zinc – 100 per box
  • 16mm – Galvanised – 100 per box
  • 18m – Zinc – 100 per box

A nylock nut, also known as a nylon-insert lock nut, is a type of lock nut that uses a nylon insert to prevent the nut from loosening due to vibration. The nylon insert is a ring of nylon that is inserted into the top of the nut. When the nut is tightened, the nylon insert deforms and grips the threads of the bolt or screw. This creates a high level of friction that prevents the nut from backing off.

Nylock nuts are a popular choice for applications where vibration is a concern, such as in automobiles, motorcycles, and aircraft. They are also commonly used in industrial applications, such as in machinery and equipment.

Nylock nuts are available in a variety of sizes and materials, including steel, stainless steel, and brass. They are also available in different grades of strength, depending on the application.

Here are some of the benefits of using nylocks:

  • They are effective at preventing vibration-induced loosening.
  • They are easy to install and remove.
  • They are reusable.
  • They are relatively inexpensive.

Here are some of the drawbacks of using nylocks:

  • The nylon insert can wear out over time, especially in high-vibration applications.
  • The nylon insert can be damaged by heat.
  • The nylon insert can be affected by chemicals.

Overall, nylock nuts are a versatile and reliable type of lock nut that is well-suited for a variety of applications.

Additional information

Weight1 kg
Dimensions10 × 10 × 12 cm
Select Nut Size

3/8-inch Zinc UNF, 7/16-inch Zinc UNF, 9/16-inch Zinc UNF, 1/2-inch Galvanised BSW Thread, 5/8-inch Zinc UNF, M16 Zinc, M16 Galvanised, M18 Zinc

Our Service Lifetime Warranty

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.

Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.

Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.

60-Day Returns

After 60 years of experience, we know that life has its unpredictable moments.

All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.

You can view our full policy for change-of-mind returns here.


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