A crane boom segment (53, 153; 54, 154) comprising: a) at least three chords (61, 161; 63, 163), with interlacing elements (65, 165) connecting the chords (61, 161; 63, 163) into a fixed, parallel relationship forming a boom segment (53, 153; 54, 154); each of the chords (61, 161; 63, 163), and the boom segment (53, 153; 54, 154), having a first end and a second end; at least one of the at least three chords (61, 161) being present in a first longitudinal portion (67, 167) of the boom segment (53, 153; 54, 154) and the remainder of the at least three chords (63, 163) being present in a second longitudinal portion (68, 168) of the boom segment (53, 153; 54, 154); b) a connector (70, 170; 80, 180) on each of the first and second ends of each of the chords (61, 161; 63, 163); half of the connectors (70, 170) being of a first type and having extensions (71, 72, 73; 171, 172, 173) and half of the connectors (80, 180) being of a second type and having extensions (81, 82; 181, 182), each of the connectors (70, 170; 80, 180) including a stop surface (78, 88, 174, 184); c) the extensions (71, 72, 73; 171, 172, 173; 81, 82; 181, 182) having an aperture there through sized to receive a main pin, the extensions (71, 72, 73; 171, 172, 173; 81, 82; 181, 182) and apertures being positioned on their respective connectors (70, 170; 80, 180) such that when the second end of the boom segment (53, 153) is in an aligned position with and coupled to the first end of an identical boom segment (54, 154), with connectors (70, 170; 80, 180) on the two boom segments (53, 153; 54, 154) coupled together, the extensions (71, 72, 73; 171, 172, 173; 81, 82; 181, 182) of the coupled connectors (70, 170; 80, 180) overlap one another and the apertures are aligned such that the main pin may be inserted through the apertures to secure the connector (70, 170) of the second end of the boom segment (53, 153) to the connector (80, 180) of the first end of the identical boom segment (54, 154); and characterized in that: d) the placement of the stop surfaces (78, 88, 174, 184) on the connectors (70, 170; 80, 180) being such that, when the identical boom segment (54, 154) is positioned such that the main pin can be inserted through the apertures in the extensions (71, 72, 73; 171, 172, 173; 81, 82; 181, 182) of the connectors (70, 170; 80, 180) of the remainder of the chords (63, 163) on the second longitudinal portion (68, 168) of the boom segments (53, 153; 54, 154), the stop surfaces (78, 88, 174, 184) cooperate to align the apertures in the extensions (71, 72, 73; 171, 172, 173; 81, 82; 181, 182) of their respective connectors (70, 170; 80, 180) when the stop surfaces (78, 88, 174, 184) contact one another. a) at least three chords (61, 161; 63, 163), with interlacing elements (65, 165) connecting the chords (61, 161; 63, 163) into a fixed, parallel relationship forming a boom segment (53, 153; 54, 154); each of the chords (61, 161; 63, 163), and the boom segment (53, 153; 54, 154), having a first end and a second end; at least one of the at least three chords (61, 161) being present in a first longitudinal portion (67, 167) of the boom segment (53, 153; 54, 154) and the remainder of the at least three chords (63, 163) being present in a second longitudinal portion (68, 168) of the boom segment (53, 153; 54, 154); b) a connector (70, 170; 80, 180) on each of the first and second ends of each of the chords (61, 161; 63, 163); half of the connectors (70, 170) being of a first type and having extensions (71, 72, 73; 171, 172, 173) and half of the connectors (80, 180) being of a second type and having extensions (81, 82; 181, 182), each of the connectors (70, 170; 80, 180) including a stop surface (78, 88, 174, 184); c) the extensions (71, 72, 73; 171, 172, 173; 81, 82; 181, 182) having an aperture there through sized to receive a main pin, the extensions (71, 72, 73; 171, 172, 173; 81, 82; 181, 182) and apertures being positioned on their respective connectors (70, 170; 80, 180) such that when the second end of the boom segment (53, 153) is in an aligned position with and coupled to the first end of an identical boom segment (54, 154), with connectors (70, 170; 80, 180) on the two boom segments (53, 153; 54, 154) coupled together, the extensions (71, 72, 73; 171, 172, 173; 81, 82; 181, 182) of the coupled connectors (70, 170; 80, 180) overlap one another and the apertures are aligned such that the main pin may be inserted through the apertures to secure the connector (70, 170) of the second end of the boom segment (53, 153) to the connector (80, 180) of the first end of the identical boom segment (54, 154); and characterized in that: d) the placement of the stop surfaces (78, 88, 174, 184) on the connectors (70, 170; 80, 180) being such that, when the identical boom segment (54, 154) is positioned such that the main pin can be inserted through the apertures in the extensions (71, 72, 73; 171, 172, 173; 81, 82; 181, 182) of the connectors (70, 170; 80, 180) of the remainder of the chords (63, 163) on the second longitudinal portion (68, 168) of the boom segments (53, 153; 54, 154), the stop surfaces (78, 88, 174, 184) cooperate to align the apertures in the extensions (71, 72, 73; 171, 172, 173; 81, 82; 181, 182) of their respective connectors (70, 170; 80, 180) when the stop surfaces (78, 88, 174, 184) contact one another.