bottom bolt

bottom bolt

A bolt at the bottom of a door; locks by slipping into a socket in the floor; may be held in the raised position by a catch.
References in periodicals archive ?
17 1/4" bottom bolt circle and 12"-13" top bolt circle, without anchor bolts.
The highest average MOE came from the outer radial zone in the bottom bolt.
5" top bolt circle, 15" bottom bolt circle, 17" height, without anchor bolts.
If the bottom bolt comes out, that leaves the top bolt holding a 200-lb cable reel.
Contract awarded for The bottom bolt of his life Small Stream maintenance construction
All Breakaway Bases Shall Be 14 A' To 15 Top Bolt Circle And 14 A' To 16 A' Bottom Bolt Circle.
When considering locks don't forget about any French doors, which can be fitted with top and bottom bolts, and UPVC doors, to which sash jammers and antisnap locks can be added to increase resistance and deter forced entry.
Consider fitting door chains, spy holes, top and bottom bolts and even CCTV, as these can all boost security and as well as preventing break-ins they can increase your sense of security.
Make sure the lift bracket's two bottom bolts get reinstalled if they've been removed.
Top and bottom bolts can be added to French doors and sash jammers to UPVC doors.