what size are LCN through bolts

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The LCN Thru bolts accept 1/4-20 thread. LCN thru bolts are made of steel with zinc plating.
A 4040 closer mounted with thru bolts on a 2-3/4" thick door would require 1/4-20 X 3-1/2" machine screws.
LCN recommends an 18 AWG (minimum) wire size (gauge) to the 8310 Series hardwired actuators.
The LCN -61 Blade Stop Spacer is powder coated steel and measures 4" x 1 1/8" x 1/2" (overall dimensions).
LCN is pleased to announce the release of our new 36" Full Length Actuator. In situations where it is essential to be able to activate an automatic operator from different heights or angles (e.g....
Data Sheet includes an Overview, Dimensions, Construction, Application Chart, and Product Specifications.
The Fusible Link arm is available with the 4010, 4020 and 4110 series closers. They all use the same Fusible Link arm. The UL Listing number is for the Fusible Link arms is R1943. The 4010 Serie...
The default backset is 2 3/4" and the latch faceplate dimensions are 1 1/8" x 2 1/4". The latch supplied is the 13-047 deadlatch and 13-048 springlatch.