Checkpoint original® image on nut
Zoom In
Checkpoint original® image exploded above nut
Checkpoint original® image
Checkpoint original® side view CAD
Checkpoint original® configuration and re-torque required
Red Checkpoint original® on wheel
Fluoro Yellow Checkpoint original® on wheel
Two wheels with Fluoro Checkpoint original®
Checkpoints original® on exhibition vehicle
Checkpoint original® and Dustite LR® indicators on truck
Point to point configuration of Checkpoint original® on CAD Wheel Zoom
Wheel CAD showing wheel nut movement indicated by Checkpoints original®
Checkpoint® clipboard checklist

Checkpoint original® was the FIRST ever product in the global market to provide an indication of wheel nut movement on vehicles and this safety system concept has gradually spread from its UK origin throughout the world. 

Checkpoint original® wheel nut indicator is a core product from Checkpoint range and is in high demand globally. The Checkpoint® is offered in a very large range of sizes to cover a wide scope of applications throughout industrial, agricultural. military, rail and commercial vehicle sectors amongst others.



The primary functions of Checkpoint original® are to:

  • Provide a clear visual indication of nut movement, particularly useful and applicable for commercial vehicle wheels
  • Provide an indication of wheel overheating which is otherwise difficult to detect, usually as a result of brakes sticking or problems with the bearings, through the use of specific product material melting points (Standard, High Temperature and Ultra High Temperature options available)
  • Provide a clear visual commitment to roadworthiness and professionalism to other road users, customers, health and safety, road and transportation associations such as DfT, HMRC Customs and Excise, VOSA, HSEFTA and RHA

The primary benefits of fitting Checkpoint original® are: 

✓ Improved safety of fittings where nuts are a critical structural component, such as on vehicle wheels, rail track and industrial/commercial structures
✓ Facilitates the ease of walk around and visual checks or audits to locate problems with fixtures or fittings where nuts are used as a critical component
✓ Reduction in maintenance costs resulting from accurate locating of nut loosening or wheel overheating
✓ Reduction in vehicle downtime
✓ Improved professionalism, roadworthiness and safety related company image or reputation
✓ Cost effective and easy solution to implement

Additional information

Checkpoint original® Standard/High Temp (HT)/Ultra High Temp are all manufactured in the highest quality virgin polymers and are resistant to moisture/water, road salt, oil, detergents and most other common solvents/contaminants.

Checkpoints® are sized by the corresponding measurement (in millimetres) across the flats of the hexagonal nut fitting. Current sizes available* include (in mm):

17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 40, 41, 44, 46, 50

*Available stock levels vary for each size and colour in accordance with demand for each size. For further information or questions please contact us.

Checkpoint® wheel nut size chat

The standard colours for Checkpoint® are Fluoro Yellow and Red, however subject to stock and/or minimum order quantity, the following are also available*:

Blue, Black, Drab Olive Grey, Green, Orange, Silver Grey, White and Solid Yellow.

*Other colours can be made available subject to a high minimum order quantity.

Checkpoint original® - Fluoro Yellow
Checkpoint original® - Red
Checkpoint original® - Blue
Checkpoint original® - Black
Checkpoint original® - Drab Olive Grey
Checkpoint original® - Green
Checkpoint original® - Orange
Checkpoint original® - Silver Grey
Checkpoint original® - White
Checkpoint original® - Solid Yellow
Checkpoint® Point-to-Point - initial fitting
Checkpoint® Elephant File/Daisy Chain - initial fitting
Checkpoint® Point-to-Centre - initial fitting
Checkpoint® Point-to-Point - indicating nut movement
Checkpoint® Elephant File/Daisy Chain - indicating nut movement
Checkpoint® Point-to-Centre - indicating nut movement

Checkpoints® are manufactured in the highest quality virgin polymers and are resistant to moisture/water, road salt, oil, detergents and most other common solvents/contaminants.

There are two materials available from stock*; Standard and High Temperature (HT). The melting temperature of the standard product material is 125°C and 165°C for HT, and the detailed testing documents are available from the downloads tap.

A third material in Ultra High Temperature (UHT) is available to order, subject to minimum order quantity. The independent testing of this material is available by special request.

*Stock Levels can vary.