{HEAD ~ Threaded bolts} 16 can be screwed into {TAIL ~ bores} 15, and bolts 16 extend through and are fixed against lateral displacement by an outwardly projecting flange of collar 27 of door body 6 
screwed into
{ HEAD ~ Threaded bolts } 16 can be screwed into { TAIL ~ bores } 15 , and bolts 16 extend through and are fixed against lateral displacement by an outwardly projecting flange of collar 27 of door body 6
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH