Electric-Powered Precision for Reactor Stud Hole Maintenance

The Master-Lee Stud Hole Cleaner (Corded Model) is the original stud hole cleaning solution, trusted by nuclear maintenance teams for decades. This proven tool has been successfully deployed across countless refueling outages, earning a reputation for reliability, durability, and consistent performance under demanding conditions.

Designed specifically for cleaning reactor vessel stud holes, the corded version provides a dependable, hands-on solution during maintenance cycles where accuracy and repeatability are essential. By ensuring stud holes are free of debris and contamination, the tool supports proper sealing and secure reassembly of the reactor vessel head.

Replacing traditional brushing methods that are often inconsistent and labor-intensive, the Master-Lee corded cleaner offers enhanced ergonomics and precision. Its plug-in electric drive delivers uninterrupted power, enabling sustained operation throughout the outage window without the need for recharging or battery changes.

The rotating brush mechanism is depth-adjustable and optimized to clean the full length of each stud hole. A built-in centering guide ensures alignment and operational stability, reducing the chance of thread damage or uneven cleaning.

Additionally, a vacuum port interface allows connection to an external vacuum system, enabling real-time debris collection and reducing cleanup efforts. This feature also helps maintain cleanliness in sensitive work areas and supports foreign material exclusion (FME) best practices.

Field-tested and refined over years of outage experience, the Master-Lee Stud Hole Cleaner continues to be a vital tool in nuclear maintenance programs—combining rugged construction with precision functionality and a legacy of performance that crews trust.

Available in 6″, 6.25″, 6.5″, 7″, & 7.375″

Please contact us for pricing.