Checkpoint CLY21 Checklink Wheel nut indicator and retainer - Yellow 13/16 in (21 mm) (Bag of 50 pcs)


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Checkpoint CLY21 Checklink Wheel nut indicator and retainer - Yellow 13/16 in (21 mm) (Bag of 50 pcs)

  • A dual-purpose wheel nut indicator and retainer.
  • A visual indicator of nut movement
  • Helps prevent loosening of nuts
  • Indicates possible faults with breaks or bearings through melting
  • Melts at a specific temperature of 125ºC/257ºF
  • Supports fleet safety checks
  • The world's first biodegradable wheel nut indicators*
Placing a Checklink across two adjacent nuts helps to prevent the loosening of wheel nuts. This clever product both indicates and retains against unwanted wheel nut movement as well as indicating any overheating of wheels caused by faulty brakes or bearings. Connecting two adjacent wheel nuts with our specialist polymer in our distinctive ‘S’ shape provides a retaining function, causing resistance to the loosening of wheel nuts. If the nut still manages to loosen, this will be indicated by the distortion of ‘S’ shape. The Checklink wheel nut indicator provides a clear commitment to health and safety, and roadworthiness to other road users, commercial vehicles, and road and transportation associations such as: DfT, FORS, DVSA, HSE, FTA and RHA.
Certifications TÜV-SÜD
Materials High-grade virgin polymer to ensure product quality and performance reliability for overheating indication.


Warranty Information


Martins Industries warrants to the original purchaser that its products are free from defects in material and workmanship. This coverage is valid for a period of 6 months to 3 years, depending on the product, starting from the billing date. The warranty will be voided if the product has sustained damage due to misuse, improper assembly, poor maintenance, any accident or any non-authorized modifications / repairs.

Any other information please call us up at 800-562-4791.

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