Which tool is used to cut internal threads into a hole?

• A. Needle holders
• B. Suture scissors
• C. Screw tap
• D. Torque ratchet

Answer: (C)

To create internal threads inside a hole, you need a tool that cuts the grooves that match the screw’s threads as you turn it into the hole. A screw tap is designed exactly for this: it is threaded and cuts into the pre-drilled hole to form the internal threads. It’s used with a tap wrench or T-handle to apply controlled turning force, often using a progressive sequence of taps (taper, plug, bottoming) and cutting fluid to help form clean threads. The other tools have different purposes—needle holders grip sutures, suture scissors cut suture or tissue, and a torque ratchet applies rotational force to fasteners without cutting threads.