Program affiliation undetermined (may be Space Shuttle). Pyrotechnically actuated bolt, measuring approximately 7.5" x 4" x 4", weighing 11.4 pounds, used to hold the launch vehicle to the pad until a small explosive charge was command actuated, separating the bolt (and nut retraining it) from the rocket. The bolt bears no discernable part numbers or dates; adhesive outline to body indicates the one-time presence of a parts label.