A threaded machine thread plug with integral magnet in the body usually used in lubricating or hydraulic systems.
NSN 5905-00-174-8609
NSN 5998-01-601-5133
NSN 5996-01-428-2807
NSN 6145-01-365-0643
NSN 6685-01-026-0111
NSN 6685-00-291-7857
NSN 2925-01-342-1712
NSN 6610-01-220-0372
NSN 5999-01-455-1867
NSN 2925-01-415-0264
NSN 6620-00-941-0537
NSN 6645-01-625-4810