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LCN thru bolt illustration
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What size machine screws are used with thru bolts and a 2-3/4" thick door and a 4040 closer?
Resolution:
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.:
What is the thread size on LCN thru bolts?
Resolution:
The LCN Thru bolts accept 1/4-20 thread. LCN thru bolts are made of steel with zinc plating.:
Do LCN closers come with thru bolts?
Resolution:
The standard screw pack for most LCN closer is the SRT (Self Reaming and Tapping) screw. Thru bolts are an option but must be specified on the order. There is no charge for them, but they...: