3603.20.00.00 - Detonating cords

This HTS category, 3603.20.00.00, specifically covers detonating cords. These are flexible, explosive-filled cords designed to initiate explosive charges. They consist of a core of high explosive, such as PETN, enclosed within a protective casing, often made of plastic or textile. The primary function of a detonating cord is to transmit a detonation wave along its length to simultaneously or sequentially initiate multiple explosive devices or charges.

Detonating cords are distinct from their sibling categories. Unlike safety fuses (3603.10.00.00), which burn at a controlled rate to provide a time delay, detonating cords transmit a rapid detonation. They are also differentiated from percussion caps (3603.30.00.00) and detonating caps (3603.40.00.00), which are small, sensitive devices designed to initiate the detonation sequence. Furthermore, detonating cords are not igniters (3603.50.00.00) or electric detonators (3603.60.00.00), which are specialized initiation devices employing different mechanisms for triggering.

As this is a leaf node within the HTS classification system, there are no further subdivisions under 3603.20.00.00. Classification within this code relies on the product meeting the definition of a detonating cord, characterized by its flexible construction and its ability to propagate a detonation wave to initiate explosives. The material composition of the explosive core and the type of outer casing are generally not distinguishing factors at this level, provided the product functions as a detonating cord.