Spherical head, double thread, concentric hole
An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.
NSN 2925-01-157-9204
NSN 5935-01-552-5231
NSN 5855-01-254-3041
NSN 5998-01-448-9908
NSN 6610-01-016-9329
NSN 6105-01-485-0690
NSN 6135-01-134-7222
NSN 5999-00-419-0244
NSN 5960-01-546-2379
NSN 5950-01-465-5224
NSN 6150-00-321-6494
NSN 5975-01-406-7952