This screw goes by the number 4040-159, 4110-159, 4020-159, 1260-159, 1260-159, 4040-159 and 4040SE-159. The screw has a 3/4" diameter head, 1/2" high with a 1/4" diameter shaft with 20 threads per inch (1/4-20 screw).
This LCN Sentronic Roller is used on all of the LCN Track Closers, and Sentronic Closers. Nylon wheel is 1-1/16" diameter by 3/8" thick. The shaft is has a 1/2" diameter by 1-1/8" long. LCN part # 4040SE-3034.
LCN Started using this Roller Assembly in December 2018.
This package is recommended for interior use only! Actuator package, 1-1/2" x 4-3/4", includes: 2 8310-818T Wireless Jamb Mount Actuator 2 8310-819S Surface Mount Boxes 2 8310-844J Jamb Mount Transmitter 1 8310-865 Receiver
LCN Sentronic Door Closer 4040SE-3436 On/Off Switch
The LCN 4040SE On/Off Switch measures 1" by 1/2" and the button projects up 1" from the base. This component is usually mounted by two way foam tape to isolate if for undesirable shock.