Flanges and their joints - Part 4: Qualification of personnel competency in the assembly of the bolted connections of critical service pressurized systems
Edition 2014-05-21

HEXAGON NUTS WITH FLANGE (ISO/DIS 4161:1996, MODIFIED).
Edition 1998-09-11

HEXAGON BOLTS WITH FLANGE. SMALL SERIES (ISO/DIS 15071:1996, MODIFIED).
Edition 1998-09-11

Hexagon bolts with flange - Small series (ISO/DIS 15071:1996, modified)
Edition 2007-10-17

PREVAILING TORQUE TYPE HEXAGON NUTS WITH FLANGE (WITH NON-METALLIC INSERT). (ISO 7043:1997, MODIFIED).
Edition 1998-09-11

PREVAILING TORQUE TYPE ALL-METAL HEXAGON NUTS WITH FLANGE. (ISO 7044:1997, MODIFIED).
Edition 1998-09-11

HEXAGON BOLTS WITH FLANGE. HEAVY SERIES.
Edition 1998-01-23

Hexagon bolts with flange - Heavy series
Edition 2007-10-17

PREVAILING TORQUE TYPE ALL-METAL HEXAGON NUTS WITH FLANGE WITH METRIC FINE PITCH THREAD. (ISO 12126:1997. MODIFIED).
Edition 1998-09-11

Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, Class designated- Part 1: Steel flanges, NPS 1/2 to 24.
Edition 2005-06-29