c

core

Glossary “core” Definition:
1). The interior of a hollow casing. 2). The coolant passages and fins of a radiator or heater found between the two header tanks. 3). Used part or assembly that is to be returned to the vendor for rebuilding.

core hole

Glossary “core hole” Definition:
1). Hole provided to facilitate sand casting. 2). Cavity in a casting caused by the shifting of the core during manufacturing.

core plug

Glossary “core plug” Definition:
Metal cup-shaped disc in a cast component, such as the engine block, to seal openings required by the casting tools that may be pushed out to protect it from freezing damage. Also known as freeze plug.

cord material

Glossary “cord material” Definition:
A material, such as rayon, nylon, fiberglass, polyester, or steel used in tire construction to provide strength and maintain desired shape.