Page 20 - Herrajes Patricios - Catalogo LCN

General
information

Mechanical
considerations

WHY USE PLATES, BRACKETS, ADAPTERS AND OTHER WHAT FASTENERS SHOULD BE USED?
SPECIAL PIECES? LCN closers are shipped with a wood and machine screw pack or
A drop plate is now commonly used to drop (lower) closers Self-Reaming and Tapping screws (SRT) unless other fasteners
to meet special conditions or adapt a closer to door or frame are ordered. These screw packs are suitable for wood or properly
surfaces that are not adequate for normal mounting patterns. reinforced hollow metal frames and metal or solid core wood
doors. For wood door applications, LCN recommends the use of
DROP PLATE wood screws. For selected closers, metric machine screws are
available in lieu of UNC/UNF machine screws.

When attaching closers to hollow core doors, optional THRU
BOLTS (TB) are recommended to minimize crushing or squeezing
the door. Thru bolting can also provide a very strong mechanical
connection for potentially abusive applications. Because the TB
Specialized brackets, adapters, and parallel arm shoes are barrel extends completely through the door, the door thickness
available to simplify the installation of closers with a variety of must be specified when ordering if it is other than 1-3/4˝ (44 mm).
frame and door conditions. The most commonly used are listed TB’s are only available for 1/4-20 machine screws.
with each closer. Consult LCN for assistance if you are not sure.
For high security applications, TORX machine screws are available
with most closers. These are standard for all exposed fasteners
CUSH SHOE SUPPORT
with high security closers. TORX fasteners feature a hex lobular
drive with a security pin in the center. They can only be installed or
removed with a special set of bits that are available from LCN.

BLADE STOP SPACER
TORX

EDA ARM

A20 LCN Door Control Catalog
phone: 877-671-7011 n fax: 800-248-1460 n www.allegion.com/us n 009426 rev. 11/16