To clad is to wrap or cover exterior material over a core material to protect a window from weathering (usually vinyl, aluminum or fiberglass)

A Class A fire extinguisher type is suitable to treat fires from ordinary combustibles like wood, rubber, fabrics, and plastics

A Class B fire extinguisher type is suitable to treat fires from flammable liquids and gases like gasoline, oils, paints, and lacquers

A Class C fire extinguisher type is suitable to treat fires involving live electrical sources

The claw is a ‘V’ shaped component made to fit around a nail shank and catch on the nail head for removal of the fastener

A cleanoutis an access port in a trap or drain pipe that provides access for clearing an obstruction. 

A clutch is an adjustable feature on a drill allowing the motor to engage and release from the chuck at a specific torque

Coarse threads have fewer threads per inch for faster driving of screws and more bite in materials like wood

A Coating is a thin covering for a fastener that adds performance to it (ex. Weather resistance, more holding power, etc.)

A coil nailer is a type of nailer used for roofing, siding, and fencing that uses fasteners that are spiral collated with large head nails