A threaded machine thread plug with integral magnet in the body usually used in lubricating or hydraulic systems.
NSN 6685-01-186-0401
NSN 5950-01-164-6556
NSN 6620-00-485-4136
NSN 6105-01-526-1087
NSN 5999-00-407-2033
NSN 6320-01-378-0221
NSN 4140-01-273-7788
NSN 5950-01-608-0888
NSN 5999-01-013-4488
NSN 5930-00-934-9714
NSN 5920-01-267-9036
NSN 5945-01-429-1252