countersank
Set screw below
Countersank is the past tense of countersink, meaning to enlarge the top of a hole so a screw or bolt head can sit flush with or below the surface: He countersank the holes before driving in the screws.
The technique prevents fastener heads from protruding, creating a smooth finish in woodworking and metalwork.
Tapering to a point
- recessedSet back into something
- taperedGradually narrowing in width
- angledTurned from perpendicular
- beveledCut at an angle
concave · sunken · inset · depressed · indented · cone-shaped · undercut
Threaded metal fastener
- boltThreaded rod for nuts
- rivetHeaded pin hammered flat
- flushSame suit, five cards
- secureProtected from harm
anchor · affix · attach · fasten · seat · embed · recess · set
conical
Tapering to a point
beveled · concave · sunken · inset · depressed · indented · cone-shaped · undercut
screw
Threaded metal fastener
secure · anchor · affix · attach · fasten · seat · embed · recess · set · mount
chamfer
Angled corner cut
lathe · milling · aerospace · aluminum · steel · sheet-metal · flute · shank · taper · angle
pilot-hole
Preparatory drill opening
- joineryFitting wood pieces together
- cabinetmakingCraft of building furniture
- furnitureMovable room objects
drill · bit · hardwood · softwood · plywood · veneer · woodgrain · lumber · dowel · jig
sink, sinking, sunk, sank, countersink, countersunk, countersinks, countersinking, counterbore