Secure with locking compound 331900245, meets niosh/msha approval for intrinsically safe apparatus, sole source
NSN 5996-01-381-2876
NSN 5905-00-331-0386
NSN 2925-00-167-6763
NSN 6220-01-646-0555
NSN 6220-01-309-1803
NSN 4140-01-104-4727
NSN 6105-01-319-3857
NSN 5920-00-653-0019
NSN 6150-01-190-6898
NSN 6650-01-366-1618
NSN 6685-01-334-9893
NSN 5935-00-075-3712