Trademark name for a threaded metal coupling sleeve, with nuts at each end and elastomer gaskets that fit around the pipe, sealing against the outside diameter of the pipe, used for repair. The gaskets are sealed against the pipe by threading the nuts onto the ends of the coupling sleeve and then tightening them.
Drier
Sometimes called filter/drier, it removes moisture and keeps the refrigerant clean.
Driers
Substance that is added to paint or varnish to shorten drying time.
Drift
(1) A gradual shifting of position. (2) An act of being carried along on a current of air or water or circumstances.
Drift pin
Tapered metal pin, also called a drift punch, used for the purpose of aligning holes between two structural members so that they can be fastened or bolted together.
Drift point
Point at which a crane is held in position by inertia, where the electric brake is released but the electric motor is not yet energized.
Drift punch
Tapered metal pin, also called a drift pin, used for the purpose of aligning holes between two structural members so that they can be fastened or bolted together.
Drill
(1) A tool or apparatus, either manual or power operated, also called a drill bit, which is used for boring holes in wood, metal, stone, etc. (2) A shallow furrow into which seed is sown.
Drill and counterbore bit
Drill bit that makes a counterbore with the drilled hole in one operation due to use of an enlarged portion on the shank of the bit.
Drill bit
A drill bit is a hole-forming metal tool that fits in a drill's chuck. All drill bits, regardless of type, have a pointed cutting type. Bits are available in a wide range of sizes rated in numbers (wire-gauge bits), in fractions (fractional bits), in metrics (metric bits) or by a letter designation (letter size bits).
