Used on scanner 21046827-102, scanner receiver unit assy. 21046827-103, scanner receiver unit assy. 21046827-104, scanner receiver unit assy. 21046827-105,, scanner receiver unit assy. 21046827-106, scanner receiver assy. 21046827-107, scanner receiver unit assy. 21046827-108, scanner receiver unit assy. 21046827-109, scanner receiver unit 21046827-110, lower hsg assembly 21048096-102. pan head screw, modified