MIL-DTL-82020C, DETAIL SPECIFICATION: SWITCHES AND FROGS, TRACK, CAST MANGANESE STEEL, FOR PORTAL CRANES (14-MAR-1997) [SUPERSEDING MIL-S-82020B] [NO S/S DOCUMENT]

MIL-DTL-82020C, DETAIL SPECIFICATION: SWITCHES AND FROGS, TRACK, CAST MANGANESE STEEL, FOR PORTAL CRANES (14-MAR-1997) [SUPERSEDING MIL-S-82020B] [NO S/S DOCUMENT]., This document covers special cast manganese steel track fittings for portal crane tracks.