is located in housing slot 34 latch pin 56 includes a frusto conical end part 64 rod part 52 terminates in a threaded end portion 66 which is threaded into nut 68 a second rod part 70 is threaded into nut 68 as shown the turning of nut 68 allows for the extension or retraction of rod part 70 and the resulting adjustment of latch mechanism 10 to accommodate doors fo varying widths a stop 72 is fixed to vehicle side wall 12 as shown in fig1 4 and 5 stop 72 includes a cup like receptacle 74 in communication with an entry port 76 and a flexible lip retainer 78 which secures latch pin end part 64 in snap fit interlock fashion stop 72 is a conventionally used part in the trade latch mechanism 10 operates as follows door 14 is pivoted along hinge 24 from the closed position of fig1 and 3 in the direction of arrow 80 towards the open position of fig5 the exposed end 71 of rod part 70 initially abuts against door jamb 22 and causes the compression of spring 50 as door 14 is opened see fig4 the spring 50 urges rod parts 52 and 70 towards jamb 22 and pivot tab 58 is cammed against the end of rod slot 55 to pivot latch pin 56 about its pivot pin 62 within housing slot 34 in the direction of arrow 82 when the door 14 is.