Lincoln 1/4" - 28 Thread 45 degree Fitting, 5210

This type of thread is used mostly on cars and light trucks. The (SAE-LT) is a thread that conforms to the Society of Automotive Engineers lubrication fittings thread specification.

Lincoln Grease Fittings: All of the straight grease fittings are heat treated. On the angle fittings, the ball check end or the greasing end is heat treated. The spin-drive and drive-type angle fittings are entirely heat treated. All fittings are zinc plated and have a supplemental coating of chromate.