When should SRT screws by used?

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SRT "Self Reaming, & Tapping" screws are the default type screws shipped with LCN closers, when a specific screw type is not specified.   There are 3 standard lengths of SRT screws: 1-3/8" 1...
The SRT screw that is used for mounting the 1461 closer body is 1 3/8" long.Four screws are used to mount the closer body.
LCN "does not" recommend the use of SRT screws is wood doors. LCN "only" recommends the use of Wood Screws in wood doors and frames, as noted on the installation instructions.
The part number for 88 series dogging screw is 090004 (package of two) and 090083(package of ten).
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.
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 ...