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
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Input: 1-1/4″-7 Female
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Output: 5/8″-11 Male
Common Uses
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Adapting wet core drilling machines for smaller diamond core bits
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Running dry-use diamond cores with 5/8″-11 female threads
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General masonry, concrete, and drilling applications requiring thread conversion
Questions? 800-350-8665

