M8,M10,M12,M16 Carbon steel Indexing plungers with new typeIndex plunger, spring loaded plunger, indexing plunger, - Black oxided steel ... for locating, positioning, indexing and positive locking. Index plungers are used in a variety of industries:Machine and ... indicator, position indicators, indicators, bakelite handle and knob, lobe ball knobs with brass insert, long knobs,adjustable handle , zinc ...