Adapter F 5/8″-11 to 1-1/4″-7 Male

Adapter F 5/8″-11 to 1-1/4″-7 Male

Hard to find adapter to convert a threaded female 5/8″ x 11 to 1-1/4″-7 male. Great for using pro series core bits, wet/dry diamond carbide plate cutters when using a core drilling machines with a 5/8″-11 male chuck.

Adapter F 5/8″-11 to 1-1/4″-7 male is a precision-machined thread adapter designed to convert 5/8″-11 female threaded tools to a 1-1/4″-7 male connection. This adapter solves a common compatibility issue when using professional core drilling and cutting tools on machines with a 5/8″-11 male spindle or chuck.

Commonly used with core drilling machines, handheld drills, and drill presses, this adapter allows seamless use of wet and dry diamond core bits, carbide plate cutters, and Pro Series core bits that require a 1-1/4″-7 male thread.

Built for durability and concentric alignment, this adapter ensures secure engagement and smooth power transfer, reducing vibration and thread wear during operation.

Common Applications

• Adapting 1-1/4″-7 male core bits to 5/8″-11 equipment

• Core drilling in concrete, masonry, stone, and block

• Wet or dry diamond coring applications

• Carbide plate cutters and specialty core drilling tools

Key Features

• Converts 5/8″-11 female to 1-1/4″-7 male

• Precision-machined for proper thread engagement

• Heavy-duty construction for professional use

• Compatible with wet & dry diamond core bits

• Ideal for core drilling machines and adapters

Thread Specifications

• Input Thread: 5/8″-11 Female

• Output Thread: 1-1/4″-7 Male

Hard-to-find adapters like this eliminate the need to replace expensive core bits or drilling equipment. This adapter expands tool compatibility, saves money, and keeps crews productive on the jobsite.