Abstract: A carabiner consisting of a C-shaped, elongated body member and an elongated closure member pivotally movable on one longitudinally terminal portion of the body member toward and away from a closing position in which both members jointly constitute a closed loop. The body portion is made from a tubular blank whose relatively heavy-walled end portions are of smaller diameter than the thinner-walled central portion. The longitudinally terminal portions of the body member are shaped by flattening the reduced end portions of the blank so that these terminal portions need not be machined to provide the necessary smooth internal contour of the closed carabiner.