Abstract: A support pin is engaged with a collar, as affixed to a mount, by an engaging mechanism between the support pin and the collar, which engaging mechanism provides interchangeability, index-ability and positive locking between the support pin and the collar. Motion picture lighting and rigging equipment is secured to the support pin. The engaging mechanism includes a V-shaped or other configured reception on or in the collar with a cross-pin or similarly other configured portion on the support pin (e.g., non-circular cross-sectional configurations such as a hexagon). A linchpin is placed though mating openings in the collar and support pin to lock the two together when the mating openings are aligned. Two or more crossing V-shaped receptions or non-circular cross-sectional configurations provide a variety of angular orientations of the support pin, especially for bent support pins, with respect to the collar.

Abstract: A support pin is engaged with a collar, as affixed to a mount, by an engaging mechanism between the support pin and the collar, which engaging mechanism provides interchangeability, index-ability and positive locking between the support pin and the collar. Motion picture lighting and rigging equipment is secured to the support pin. The engaging mechanism includes a V-shaped or other configured reception on or in the collar with a cross-pin or similarly other configured portion on the support pin (e.g., non-circular cross-sectional configurations such as a hexagon). A linchpin is placed though mating openings in the collar and support pin to lock the two together when the mating openings are aligned. Two or more crossing V-shaped receptions or non-circular cross-sectional configurations provide a variety of angular orientations of the support pin, especially for bent support pins, with respect to the collar.