What size should be drilled when using thru bolts?

RELATED FAQS

Question
Answer
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.
The LCN Thru bolts accept 1/4-20 thread. LCN thru bolts are made of steel with zinc plating.
Order the M204-198 thru-bolt jig, see Figure 1. Figure 1: M204-198 thru bolt jig The 40-080 was the old Schlage jig. The 030736-000-70 was the old Falcon jig.  When the jig changed to...
 Mounting Posts   Part Number  Door Thickness  L583-211  1 3/8"  L583-212  1 3/4" - See note section on SL1 trim  L583-213  2...
The LCN 4041/4040XP and the Glynn Johnson 90 series can be mounted in conjunction with each other without a special template.  The 4040 door closer is on the pull side of the door and the GJ 90 is ...
The standard screw pack for an 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 do need to...