Aerospace ‘B’ Hi-Lite Protrusion Gauge – Red Markings Description: Omega Technologies 5 Piece Set of Precision Protrusion Gauges for nominal diameter Hi-Lite® fasteners in sizes 5/32”, 3/16”, 1/4”, 5/16”, and 3/8”. These Omega Technologies Protrusion Gauges are larger than the OM2-1522HST Gauges.

Omega Technologies Protrusion Gauges feature the same Minimum and Maximum Protrusion Limits as the OM2-1522HST but with much tighter tolerances. These Omega Technologies Protrusion Gauges can be used in place of 2-1522HST or OM2-1522HST Gauges. The larger gauges in this set measure 1.05” square and permit a greater reach to check pins even if the collars have particularly wide bases or washers. Each Omega Technologies Protrusion Gauge is serialized for calibration and control purposes and all 6 pieces in this set feature the same serial number.