Mark 2 re placement part, niosh/msha, meets ansi/ul 913 standard for intrinsically safe apparatus
NSN 5975-01-050-5225
NSN 5835-01-173-1578
NSN 5975-00-693-5922
NSN 7035-00-205-1932
NSN 5930-01-146-2168
NSN 5950-01-400-4166
NSN 6150-01-445-5759
NSN 5920-00-318-7150
NSN 5965-00-689-1545
NSN 5990-01-588-3999
NSN 5915-00-284-8744
NSN 6240-00-844-1758