BHMA A156-115:2014 pdf download.AMERICAN NATIONAL STANDARD FOR HARDWA REPREPA RATION IN STEEL DOORS AND STEEL FRAMES
1. SCOPE AND PURPOSE
1.1 These Standards cover all significant dimensional attributes for mounting common hardware products in steel doors and frames. All dimensions shall be as shown on the accompanying drawings.
1.2 These standards were developed to show only the most commonly used preparations for door hardware, and provide targets for standardization. Where multiple configurations are in common usage, separate drawings are provided. For other configurations, it is recognized that these standards may be used in part, or with exceptions,while still providing some degree of basic guidance and standardization.
4.4 Dead Bolt. A lock component which protrudes from, or is withdrawn into the lock front by action of the lock mechanism. When the door is closed and the dead bolt is thrown, it extends into a hole provided in the strike, locking the door and does not return with end pressure.
4.5 Door Edge The two vertical surfaces of the door that are perpendicular to the door face.
4.5.1 Beveled Edged Door The angle of the lock or hinge edge of the door in relation to the face of the door.The standard bevel is 1/8 inch in 2 inches, or approximately 3 degrees.
4.6 Door Face Surface of the door exposed to view when the door is closed.
4.7 Face Cut Out A piercing of the door face for hardware, lites, louvers or accessories.
4.8 Flush Bolt A type of bolt that when applied it is flush with the edge or face of the door.
4.9 Frame Frame is that portion of an opening which gives a finished appearance to a cutout in a wall and provides a square and plumb opening on which to hang a door.
4.10 Head Horizontal frame member atop of opening or top of transom frame.
4.11 Hinge Face That face of the door viewed when observing the hinge knuckles on the door and frame.
4.12 Interconnected Lock A mechanically interconnected locking mechanism having a separate latch bolt or dead locking latch bolt and dead bolt designed for installation in round bored openings in the edge and face of a door.
4.13 Latch Bolt A lock component having a beveled end which projects from the lock front in its extended position, but is forced back into the lock case by end pressure or drawn back by action of the lock mechanism.When the door is closed, the latch bolt projects into a hole provided in the strike, holding the door in a closed position.BHMA A156-115 pdf download.