黏着榴弹（High Explosive Squash Head, HESH）是一种主要由英国所使用的反坦克弹种，美国称为塑性榴弹（High Explosive Plastic, HEP），中国称为碎甲弹，有的文章翻译为爆震弹，它是由塑性炸药与延迟引信所构成的一种坦克砲弹。当黏着榴弹碰撞目标后，塑性炸药会因为冲击而变形为圆盘状附着在表面上，直到砲弹底部的延迟引信点燃引爆塑性炸药。接着爆炸产生的震波会在撞击的物体中传递，然后在内侧产生向内碎裂的破片，达成杀伤内部人员、破坏装备、点燃油料或弹药的效果。

High-explosive squash head (HESH) is a type of explosive ammunition that is effective against tank armour and is also useful against buildings. It was fielded chiefly by the British Army as the main explosive round of its main battle tanks during the Cold War. It was also used by other military forces, particularly those that acquired the early post-World War 2 British 105 mm Centurion tank, including India, Israel and Sweden. In the United States, it is known as HEP, for "high explosive, plastic".