Adapter F1-1/4″-7 Female to 5/8″-11 Male Precision-machined thread adapter designed to run smaller diamond core bits on wet core drilling machines. This adapter converts a 1-1/4″-7 female spindle connection down to a 5/8″-11 male output, allowing compatibility with smaller core bits. Most diamond core bits under 1-7/8″ diameter use a 5/8″-11 female thread, including the majority of dry-use diamond core bits. This adapter makes it possible to use those bits on equipment equipped with a 1-1/4″-7 female arbor. Built for reliable alignment, secure engagement, and smooth operation in core drilling applications. Thread Configuration Input: 1-1/4″-7 Female Output: 5/8″-11 Male Common Uses Adapting wet core drilling machines for smaller diamond core bits Running dry-use diamond cores with 5/8″-11 female threads General masonry, concrete, and drilling applications requiring thread conversion Questions? 800-350-8665
