Checkthread Kit (21-33mm)

The Checkthread® Kit is a specifically engineered diagnostic toolset designed for workshop and garage use to verify the quality and integrity of wheel studs and stud holes. By identifying issues that are often invisible to the naked eye - such as micro-cracks, corrosion, or stretched threads - this kit serves as a critical preventative maintenance measure to reduce the risk of wheel loss incidents.

Comprising stainless steel thread testers, a stud hole elongation tester (SHET), and a conical/spherical tool, the kit allows technicians to ensure every component is fit for purpose before a wheel is even fitted. This proactive approach supports fleet safety and demonstrates a professional commitment to roadworthiness and compliance.

Key Features

• Comprehensive Diagnostic Tool – monitors wheel stud quality, stud hole integrity, and determines the correct nut type for any given wheel.
• Advanced Thread Testing – highlights damage, stretching, or corrosion on wheel studs that cannot be identified visually.
• Elongation Detection – the SHET tool quickly identifies if stud holes have become stretched or damaged, indicating a need for wheel replacement.
• Precision Conical/Spherical Tool – allows users to easily distinguish between spherical and conical seats to ensure the correct nut type is used.
• Risk Mitigation – helps prevent stud shearing and wheel detachment by identifying compromised components during routine servicing.
• Professional Safety Commitment – demonstrates a clear focus on roadworthiness to organizations including DfT, FORS, DVSA, HSE, FTA, and RHA.

Specifications

• Material (Thread Testers) – High-quality premium stainless steel
• Material (SHET & SPH/CON) – Durable glass-filled nylon
• Thread Tester Sizes – M18, M20, M22, Scania (7/8 UNF-11), and Volvo standard sizes.
• Stud Hole Sizes – 21mm, 24mm, 26mm, 31mm, 32mm, and 33mm.

Checkthread® Kit provides essential diagnostic data but does not replace the need for regular, manufacturer-approved maintenance. If damage or elongation is identified, components should be inspected further and replaced immediately according to manufacturer recommendations.