2176x -

"2176x" is also a identifier in heavy industry and safety equipment documentation:

Consult all provided technical manuals for specific rigging and lifting instructions, as units can be top-heavy. VSS/VSM/VSH/VSSH Compressor Unit "2176x" is also a identifier in heavy industry

The Wolflite Handlamp H-251A is certified under BAS00ATEX2176 , a safety standard for equipment used in potentially explosive atmospheres. "2176x" is also a identifier in heavy industry