plug-chamfer tap

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Tap and die — Not to be confused with Tool and die. Taps and dies are cutting tools used to create screw threads, which is called threading. A tap is used to cut the female portion of the mating pair (e.g., a nut). A die is used to cut the male portion of the… … Wikipedia
Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations … Wikipedia
chink — Synonyms and related words: abysm, abyss, aperture, arroyo, assailability, bar, bezel, bind, block, block up, blockade, box canyon, breach, break, broach, bump, bung, canyon, cash, caulk, cavity, chamfer, change ringing, chap, chase, chasm, check … Moby Thesaurus

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