Hex wrench flats
An externally threaded screw-like device with a hexagon, square, slotted or any other type drive end. The other end may have a spherical ball, socket or other type of machined surface. It may have a concentric hole along the longitudinal centerline and a hole perpendicular to the axis joining the concentric hole for lubrication. It is specifically designed to be used as a means for adjusting engine poppet valve tappet clearances and may be furnished with a lock nut.
NSN 5998-01-292-7721
NSN 6320-00-908-6841
NSN 6240-01-573-5941
NSN 5975-01-237-2163
NSN 6145-01-463-8229
NSN 5895-01-261-3094
NSN 6150-00-330-3629
NSN 4140-00-277-6285
NSN 6130-00-445-3980
NSN 6150-01-207-0896
NSN 6150-00-823-5590
NSN 5975-01-552-1172