replacement screw Astro a40 tr

the middle screw on the adjustment bar next to the two smaller screws is missing it connects the bar to the ear cuffs i have the washers pls help and tell me what screw it is.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0