US Cluster Adapter, M15A1
100 pound size for twenty four 4-pound Frag. Bombs M83. It is a cylindrical sheet-metal case, which opens longitudinally, being hinged at the rear and closed by a nose cup. It is 47.35 inches long and 8 inches in diameter, and weighs 155 pounds loaded. It uses Fuze M155 or AN-M146.
These clusters are released from altitudes of not less than 3,000 feet and not more than 5,000 feet. Fuze settings for function after release are varied from five seconds at minimum release altitude to eight seconds at maximum release altitude. When the fuze fires, it releases the nose closing cup, allowing the adapter to open and release the bombs. The bombs scatter to form a pattern over an area of approximately 300 by 200 feet.
Collaborative Ordnance Data Repository