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srt screw size
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Answer
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.:
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 standard screw size used on Steelcraft doors with 4 1/2" or 5" hinges?
Resolution:
Steelcraft follows the industry standards for hinge reinforcement and preparation for both door and frame. Unless otherwise specified all products prepared for butt hinges will have mounting holes ...: