Secure with locking compound 331900245, meets niosh/msha approval for intrinsically safe apparatus, sole source
NSN 6610-01-565-9857
NSN 6610-00-401-2601
NSN 6220-01-238-7815
NSN 2925-01-139-5144
NSN 6135-01-195-5343
NSN 6130-00-967-0475
NSN 7035-00-500-7839
NSN 5920-01-655-9556
NSN 5920-00-753-5113
NSN 5910-01-010-2911
NSN 6110-01-027-1851
NSN 5998-01-212-7101