Tribal microcontroller is an Atmel AT89C2051

Feed neeck appears to be 28tpi, major dia. of 0.800"

front AOC cap appears to be .808" major dia, 28tpi

3/8"-24 for the ASA bolt?

solenoid mounting screws are 2mm x 0.4, 18mm long (normal K4H01 screws are 1.6mm x 0.35 threads)

microswitch knurled pins are 5/64" dia., 3/4" long, knurls are 0.15" long

trigger knurled pins are 1/8" dia., 3/4" long, knurls are 1/8" long

valve lock screw is M8 metric.

Regulator adjustment screw is 8-32, 7/16" long

delrin bolt rear is threaded 3/8"-24

delrin bolt spring is 2.75" long, 0.033" wire dia., .3125" outside diameter, about 23 coils