NF E74-304:1984 ASSEMBLY TOOLS FOR SCREWS AND NUTS. OPEN-END DOUBLE-HEAD ENGINEERS WRENCHES. DOUBLES-HEAD BOX WRENCHES AND COMBINATION WRENCHES. MAXIMUM OUTSIDE DIMENSIONS OF HEADS.
2009NF E74-304:2009 Assembly tools for screws and nuts - Double-headed open-ended wrenches, double-headed box wrenches and combination wrenches - Maximum widths of heads.
0000 NF E74-304:2001
1984NF E74-304:1984 ASSEMBLY TOOLS FOR SCREWS AND NUTS. OPEN-END DOUBLE-HEAD ENGINEERS WRENCHES. DOUBLES-HEAD BOX WRENCHES AND COMBINATION WRENCHES. MAXIMUM OUTSIDE DIMENSIONS OF HEADS.