A latch mechanism (10, 210, 310) comprising: a frame (20, 320); a handle coupled to the frame (20, 320) for rotation relative to the frame (20, 320); a linkage coupled to the handle and the frame (20, 320), a pin coupled to the linkage, the linkage including a pivot link coupled to the frame (20, 320) for rotation relative to the frame (20, 320), a pin link coupled between the pivot link and the pin, and a handle connector coupled between the pivot link and the handle; and a pre-load adjustment mechanism (18, 218) coupled to the frame (20, 320), wherein the linkage is configured to convert rotation of the handle into axial movement of the pin between an extended position and a retracted position, and the pre-load adjustment mechanism (18, 218) is configured to engage with the pin in the extended position to place a pre-load through the linkage to bias the linkage toward an over-center configuration and bias the pin toward the extended position, wherein rotation of the handle moves the handle connector to rotate the pivot link relative to the frame (20, 320) to move the pin link and pin relative to the frame (20, 320), and a connection point between the pin link and the pivot link is offset toward the handle from an axis extending between a connection point between the frame (20, 320) and the pivot link and a connection point between the pin link and the pin in the over-center configuration, and wherein a first projection extends from the pin link away from the connection point between the pin link and the pivot link, a second projection extends from the pivot link away from the connection point between the pin link and the pivot link, the first and second projections engage with one another in response to movement of the pin from the retracted position to the extended position to place the pre-load through the linkage, and the first and second projections are spaced apart from one another in the retracted position. a frame (20, 320); a handle coupled to the frame (20, 320) for rotation relative to the frame (20, 320); a linkage coupled to the handle and the frame (20, 320), a pin coupled to the linkage, the linkage including a pivot link coupled to the frame (20, 320) for rotation relative to the frame (20, 320), a pin link coupled between the pivot link and the pin, and a handle connector coupled between the pivot link and the handle; and a pre-load adjustment mechanism (18, 218) coupled to the frame (20, 320), wherein the linkage is configured to convert rotation of the handle into axial movement of the pin between an extended position and a retracted position, and the pre-load adjustment mechanism (18, 218) is configured to engage with the pin in the extended position to place a pre-load through the linkage to bias the linkage toward an over-center configuration and bias the pin toward the extended position, wherein rotation of the handle moves the handle connector to rotate the pivot link relative to the frame (20, 320) to move the pin link and pin relative to the frame (20, 320), and a connection point between the pin link and the pivot link is offset toward the handle from an axis extending between a connection point between the frame (20, 320) and the pivot link and a connection point between the pin link and the pin in the over-center configuration, and wherein a first projection extends from the pin link away from the connection point between the pin link and the pivot link, a second projection extends from the pivot link away from the connection point between the pin link and the pivot link, the first and second projections engage with one another in response to movement of the pin from the retracted position to the extended position to place the pre-load through the linkage, and the first and second projections are spaced apart from one another in the retracted position.