Used Space Shuttle Solid Rocket Booster (SRB) aft separation bolt from Launch Complex 39, measuring 5.5″ in diameter and 6″ tall, likely dating to the early 1980s. Remnants of a label remain affixed to the side. In spite of its relatively small size, this piece weighs nearly 32 pounds. In very good condition, with overall wear and rusting. From the collection of aerospace memorabilia specialist Ken Havekotte.