Definition
A C-shaped clamping tool with a fixed jaw on one end and a threaded screw with a swivel pad on the other, used to hold parts firmly together during fabrication, repair, gluing, or machining.
Plain English
A small adjustable clamp shaped like the letter C. You place the work between its jaws and tighten a screw to squeeze it tight while you work on it.
Context Anchor
Seen in aircraft maintenance, sheet-metal work, repair shops, and any task where a part must be held still before drilling, fitting, gluing, or fastening.
Derivation
Named for its shape -- the frame forms the letter C, with the screw closing the open side.
Why Pilots Care
Holds patches, ribs, or control surfaces securely during repairs so alignment and structural integrity are maintained.
Intuition Check
The “C” does not name an aircraft system or a special aviation category. It simply describes the shape of the clamp’s frame.
Example Sentence 1
The mechanic used a C-clamp to hold the patch in place while the adhesive cured.
Example Sentence 2
During the aileron repair, two C-clamps held the replacement skin in position until the rivets were set.